HT77XXA PFM Step-up DC/DC Converter
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1 PFM Step-up DC/DC Converter Features Low start-up voltage: 0.7V (Typ.) High efficiency: 85% (Typ.) High output voltage accuracy: 2.5% Output voltage: 2.7V, 3.0V, 3.3V, 5.0V Output current up to 200mA Ultra low supply current I DD :5A (Typ.) Low ripple and low noise Low shutdown current: 0.5A (Typ.) TO92, SOT89, SOT23 and SOT23-5 package Applications Palmtops/PDAs Portable communicators/smartphones Cameras/Camcorders Battery-powered equipment General Description The HT77XXA series is a set of PFM step-up DC/DC converter with high efficiency and low ripple. The series features extremely low start-up voltage and high output voltage accuracy. They require only three external components to provide a fixed output voltage of 2.7V, 3.0V, 3.3V or 5.0V. CMOS technology ensures ultra low supply current and makes them ideal for battery-operated applications powered from one or more cells. The HT77XXA consists of an oscillator, a PFM control circuit, a driver transistor, a reference voltage unit, and a high speed comparator. They employ pulse frequency modulation (PFM) for minimum supply current and ripple at light output loading. These devices are available in space saving TO92, SOT89, SOT23 and SOT23-5 packages. For SOT23-5 package, it also build-in a chip enable function to reduce power consumption during shutdown mode. Selection Table Part No. Output Voltage Package Marking HT7727A 2.7V HT7730A 3.0V HT7733A 3.3V HT7750A 5.0V TO92 SOT89 SOT23 SOT23-5 HT77XXA (for TO92) HT77XXA# (for SOT89) 7XXA# (for SOT23) 7XXA# (for SOT23-5) Note: XX stands for output voltages. Only lead free devices are available. # stands for lead free devices. For the TO92 package, there will be a # mark at the end of the date code. Block Diagram 8 H A B : : E E J A H * K B B A H 2. + J H + D E F - = > A /, + - Rev September 24, 2008
2 Pin Assignment 6 ' 5 6 & ' # : /, 0 6 % % : : ). H J 8 E A M # " 0 6 % % : : ) 6 F 8 E A M % : : ) 6 F 8 E A M % : : ) 6 F 8 E A M / 8, 7 6 : /, : /, : * J J 8 E A M /, : /, : Pin Description Pin No. TO92 SOT89 SOT23 SOT23-5 Pin Name Description 1 CE Chip enable pin, high active VOUT DC/DC converter output monitoring pin 3 NC No connection GND Ground pin LX Switching pin Absolute Maximum Ratings Supply Voltage...V SS 0.3V to V SS +7V Storage Temperature...50C to125c Operating Temperature...40C to85c Note: These are stress ratings only. Stresses exceeding the range specified under Absolute Maximum Ratings may cause substantial damage to the device. Functional operation of this device at other conditions beyond those listed in the specification is not implied and prolonged exposure to extreme conditions may affect device reliability. Thermal Information Symbol Parameter Package Max. Unit JA P D Thermal Resistance (Junction to Ambient) (Assume no ambient airflow, no heat sink) Power Dissipation SOT C/W TO C/W SOT C/W SOT C/W SOT W TO W SOT W SOT W Note: P D is measured at Ta= 25C Rev September 24, 2008
3 Electrical Characteristics V IN =V OUT 0.6; I OUT =10mA; Ta=25C (Unless otherwise specified) Symbol Parameter Test Conditions Min. Typ. Max. Unit V IN Input Voltage 6 V V OUT Output Voltage Tolerance % V START Start-up Voltage (Fig. 1) V IN :02V; I OUT =1mA V V HOLD Minimum Hold-on Voltage (Fig. 1) V IN :20V; I OUT =1mA 0.7 V I IN No-load Input Current (Fig. 1) I OUT =0mA A I DD Supply Current (Fig. 2) V S =V OUT +0.5V Measured at V OUT pin 5 10 A I SHDN Shutdown Current CE=GND A V IH CE High Threshold 2 V V IL CE Low Threshold 0.4 V I LEAK LX Leakage Current (Fig. 3) f OSC Maximum Oscillator Frequency (Fig. 3) V S =V OUT +0.5V, V X =6V Measured at the LX pin V S =V OUT 0.95, V X =6V Measured at LX pin 0.9 A 200 khz D OSC Oscillator Duty Cycle (Fig. 3) V S =V OUT 0.95, V X =6V Measured at LX pin % Efficiency 85 % Note: Absolute maximum ratings indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for which the device is intended to be functional, but do not guarantee specific performance limits. The guaranteed specifications apply only for the test conditions listed. Test Circuit # & % " %. : = J = K 0 6 % % : : ) 5 A H E A I : 6 = J = K 0 6 % % : : ) 5 A H E A I : 0 6 % % : : ) 5 A H E A I 9 /, /, /, 8 :. E C. E C. E C Rev September 24, 2008
4 Typical Performance Characteristics K J F K J 8 J = C A 8 & % # % ' & # # & & % # # # # % " # " # # # # 8 1 & 8 " & " & " & " & K J F K J + K H H A J ) - B B E? E A? O K J F K J + K H H A J ) HT7727A Output Voltage v.s Output Current (C IN =47F-Tantalum, L=47H, C OUT =22F-Tantalum) HT7727A Efficiency v.s Output Current (C IN =47F-Tantalum, L=47H, C OUT =22F-Tantalum) 4 E F F A 8 J = C A 8 4 E F F A 8 J = C A & & " & " & " # % & ' K J F K J + K H H A J ) K J F K J + K H H A J ) HT7727A Ripple Voltage v.s Output Current (C IN =47F-Tantalum, L=47H, C OUT =22F-Tantalum) HT7727A Ripple Voltage v.s Output Current (C IN =47F-Tantalum, L=100H, C OUT =22F-Tantalum) 1 F K J 8 J = C A 8 5 J = H J K F ' & % # " " & " & K J F K J + K H H A J ) HT7727A Start-up/Hold-on Voltage (C IN =47F-Tantalum, L=47H, C OUT =22F-Tantalum) Rev September 24, 2008
5 K J F K J 8 J = C A 8 ' & # ' # 8 1 # 8 & & 8 1 # 8 & & 8 & % # % % # # # & # # # 8 1 & 8 " & " & " & " & - B B E? E A? O K J F K J + K H H A J ) K J F K J + K H H A J ) HT7730A Output Voltage v.s Output Current (C IN =47F-Tantalum, L=47H, C OUT =22F-Tantalum) HT7730A Efficiency v.s Output Current (C IN =47F-Tantalum, L=47H, C OUT =22F-Tantalum) 4 E F F A 8 J = C A 8 4 E F F A 8 J = C A & # # & " & " & " # % & ' K J F K J + K H H A J ) K J F K J + K H H A J ) HT7730A Ripple Voltage v.s Output Current (C IN =47F-Tantalum, L=47H, C OUT =22F-Tantalum) HT7730A Ripple Voltage v.s Output Current (C IN =47F-Tantalum, L=100H, C OUT =22F-Tantalum) 1 F K J 8 J = C A 8 5 J = H J K F ' & % # " " & " & K FJK J + K H H A ) J HT7730A Start-up/Hold-on Voltage (C IN =47F-Tantalum, L=47H, C OUT =22F-Tantalum) Rev September 24, 2008
6 K J F K J 8 J = C A 8 " ' & # # 8 & & 8 % # ' % 8 1 # & 8 & # % # # # " & " & " & " & - B B E? E A? O K J F K J + K H H A J ) K J F K J + K H H A J ) HT7733A Output Voltage v.s Output Current (C IN =47F-Tantalum, L=47H, C OUT =22F-Tantalum) HT7733A Efficiency v.s Output Current (C IN =47F-Tantalum, L=47H, C OUT =22F-Tantalum) 4 E F F A 8 J = C A # " & " & " # % & ' K J F K J + K H H A J ) 8 1 & 8 4 E F F A 8 J = C A 8 K J F K J + K H H A J ) 8 1 # & HT7733A Ripple Voltage v.s Output Current (C IN =47F-Tantalum, L=47H, C OUT =22F-Tantalum) HT7733A Ripple Voltage v.s Output Current (C IN =47F-Tantalum, L=100H, C OUT =22F-Tantalum) 1 F K J 8 J = C A 8 5 J = H J K F ' & % # " " & " & K J F K J + K H H A J ) HT7733A Start-up/Hold-on Voltage (C IN =47F-Tantalum, L=47H, C OUT =22F-Tantalum) Rev September 24, 2008
7 K J F K J 8 J = C A 8 # # # " ' " # ' & # & " " % # % % " # & # # # 8 1 # 8 " & " & " & " & K J F K J + K H H A J ) - B B E? E A? O K J F K J + K H H A J ) HT7750A Output Voltage v.s Output Current (C IN =47F-Tantalum, L=47H, C OUT =22F-Tantalum) HT7750A Efficiency v.s Output Current (C IN =47F-Tantalum, L=47H, C OUT =22F-Tantalum) 4 E F F A 8 J = C A 8 4 E F F A 8 J = C A # # " # % & ' " & " & K J F K J + K H H A J ) KJF KJ + KH HA J ) HT7750A Ripple Voltage v.s Output Current HT7750A Ripple Voltage v.s Output Current (C IN =47F-Tantalum, L=47H, C OUT =22F-Tantalum) (C IN =47F-Tantalum, L=100H, C OUT =22F-Tantalum) 1 F K J 8 J = C A 8 5 J = H J K F ' & % # " " & " & K FJK J + K H H A ) J HT7750A Start-up/Hold-on Voltage (C IN =47F-Tantalum, L=47H, C OUT =22F-Tantalum) Rev September 24, 2008
8 Application Circuits Without CE Pin A H E A I ) * + - A? J H E? I + H F " % 0 0 # & % " %. 6 = J = K : 0 6 % % : : ) A H E A I. 6 = J = K /, With CE Pin A H E A I ) * + - A? J H E? I + H F " % 0 0 # & % " %. 6 = J = K : 0 6 % % : : ) 5 A H E A I /,. 6 = J = K A H E A I ) * + - A? J H E? I + H F " % 0 0 # & % " %. 6 = J = K : 0 6 % % : : ) 5 A H E A I /,. 6 = J = K Note: For the SOT23-5 package, when CE is pulled low, the internal blocks of the device, such as the reference band gap, gain block, and all feedback and control circuitry will be switched off. The boost converters output, V OUT, will be at a value one Schottky diode voltage drop below the input voltage and the LX pin remains in a high impedance condition. The output capacitor and load at V OUT determine the rate at which V OUT decays. Rev September 24, 2008
9 Package Information 3-pin TO92 Outline Dimensions ) *, + -. / 0 Symbol Dimensions in mil Min. Nom. Max. A B C 500 D E F G H I Rev September 24, 2008
10 3-pin SOT89 Outline Dimensions ) * 1 - +,. / 0 Symbol Dimensions in mil Min. Nom. Max. A B C D E F G H 59 I J Rev September 24, 2008
11 3-pin SOT23 Outline Dimensions, A G ) ) > ) Symbol Dimensions in mm Min. Nom. Max. A A1 0.1 A b C D E e 1.9 H L Rev September 24, 2008
12 5-pin SOT23-5 Outline Dimensions, A G ) ) > ) Symbol Dimensions in mm Min. Nom. Max. A A1 0.1 A b C D E e 1.90 H L Rev September 24, 2008
13 Product Tape and Reel Specifications TO92 Reel Dimensions (Unit: mm) 2 =? = C A 7 F. = J 5 A 7 F 2 =? = C A 7 F. = J 5 A, M # & " & & Rev September 24, 2008
14 Reel Dimensions 6, ) * + 6 SOT89 Symbol Description Dimensions in mm A Reel Outer Diameter B Reel Inner Diameter C Spindle Hole Diameter /-0.00 D Key Slit Width T1 Space Between Flange /-0.0 T2 Reel Thickness /-0.4 SOT23, SOT23-5 Symbol Description Dimensions in mm A Reel Outer Diameter B Reel Inner Diameter C Spindle Hole Diameter D Key Slit Width T1 Space Between Flange /-0.0 T2 Reel Thickness /-0.0 Rev September 8, 2008
15 Carrier Tape Dimensions 2, D J , TO92 Symbol Description Dimensions in mm I1 Taped Lead Length (2.5) P Component Pitch P 0 Perforation Pitch P 2 Component to Perforation (Length Direction) F 1 Lead Spread /-0.1 F 2 Lead Spread /-0.1 h Component Alignment W Carrier Tape Width /-0.5 W 0 Hold-down Tape Width W 1 Perforation Position W 2 Hold-down Tape Position (0.5) H 0 Lead Clinch Height H 1 Component Height Less than 24.7 D 0 Perforation Diameter t Taped Lead Thickness H Component Base Height Note: Thickness less than mm~0.5mm P0 Accumulated pitch tolerance: 1mm/20pitches. ( ) Bracketed figures are for reference only. Rev September 24, 2008
16 Carrier Tape Dimensions, 2 2 J *, 2 ) 4 A A 0 A 1 + = H E C SOT89 Symbol Description Dimensions in mm W Carrier Tape Width /-0.1 P Cavity Pitch E Perforation Position F Cavity to Perforation (Width Direction) D Perforation Diameter /-0.0 D1 Cavity Hole Diameter /-0.0 P0 Perforation Pitch P1 Cavity to Perforation (Length Direction) A0 Cavity Length B0 Cavity Width K0 Cavity Depth t Carrier Tape Thickness C Cover Tape Width SOT23, SOT23-5 Symbol Description Dimensions in mm W Carrier Tape Width P Cavity Pitch E Perforation Position F Cavity to Perforation (Width Direction) D Perforation Diameter /-0.0 D1 Cavity Hole Diameter /-0.0 P0 Perforation Pitch P1 Cavity to Perforation (Length Direction) A0 Cavity Length B0 Cavity Width K0 Cavity Depth t Carrier Tape Thickness C Cover Tape Width Rev September 24, 2008
17 Holtek Semiconductor Inc. (Headquarters) No.3, Creation Rd. II, Science Park, Hsinchu, Taiwan Tel: Fax: Holtek Semiconductor Inc. (Taipei Sales Office) 4F-2, No. 3-2, YuanQu St., Nankang Software Park, Taipei 115, Taiwan Tel: Fax: Fax: (International sales hotline) Holtek Semiconductor Inc. (Shanghai Sales Office) G Room, 3 Floor, No.1 Building, No.2016 Yi-Shan Road, Minhang District, Shanghai, China Tel: Fax: Holtek Semiconductor Inc. (Shenzhen Sales Office) 5F, Unit A, Productivity Building, Gaoxin M 2nd, Middle Zone Of High-Tech Industrial Park, ShenZhen, China Tel: , Fax: Holtek Semiconductor Inc. (Beijing Sales Office) Suite 1721, Jinyu Tower, A129 West Xuan Wu Men Street, Xicheng District, Beijing, China Tel: , , Fax: Holtek Semiconductor Inc. (Chengdu Sales Office) 709, Building 3, Champagne Plaza, No.97 Dongda Street, Chengdu, Sichuan, China Tel: Fax: Holtek Semiconductor (USA), Inc. (North America Sales Office) Fremont Blvd., Fremont, CA Tel: Fax: Copyright 2008 by HOLTEK SEMICONDUCTOR INC. The information appearing in this Data Sheet is believed to be accurate at the time of publication. However, Holtek assumes no responsibility arising from the use of the specifications described. The applications mentioned herein are used solely for the purpose of illustration and Holtek makes no warranty or representation that such applications will be suitable without further modification, nor recommends the use of its products for application that may present a risk to human life due to malfunction or otherwise. Holteks products are not authorized for use as critical components in life support devices or systems. Holtek reserves the right to alter its products without prior notification. For the most up-to-date information, please visit our web site at Rev September 24, 2008
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UNISONIC TECHNOLOGIES CO., LTD UR133/A
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Distributed by: www.jameco.com 1-800-831-4242 The content and copyrights of the attached material are the property of its owner. DS0026 Dual High-Speed MOS Driver General Description DS0026 is a low cost
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INTEGRATED CIRCUITS. 74LVC138A 3-to-8 line decoder/demultiplexer; inverting. Product specification 1998 Apr 28
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NC7SB3157 TinyLogic Low Voltage UHS Analog Switch 2-Channel Multiplexer/Demultiplexer (Preliminary)
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SGM7SZ00 Small Logic Two-Input NAND Gate
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NPN/PNP low V CEsat Breakthrough in Small Signal (BISS) transistor pair in a SOT457 (SC-74) Surface Mounted Device (SMD) plastic package.
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M3D88 Rev. 2 19 February 23 Product data 1. Product profile 1.1 Description N-channel enhancement mode field-effect transistor in a plastic package using TrenchMOS technology. Product availability: in
IRFR Description. 2. Features. 3. Applications. 4. Pinning information. N-channel enhancement mode field effect transistor
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INTEGRATED CIRCUITS. 74LV273 Octal D-type flip-flop with reset; positive-edge trigger. Product specification 1997 Apr 07 IC24 Data Handbook
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M3D3 Rev. 1 16 June 24 Product data 1. Product profile 1.1 Description N-channel enhancement mode field-effect transistor in a plastic package using TrenchMOS technology. 1.2 Features Logic level threshold