SP682 SIPEX | Alldatasheet
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Technical content
Date: 5/20/04 SP682 Micro Power Inverting Charge Pump © Copyright 2004 Sipex Corporation ■ Low Power Voltage Conversion ■ +2.4V to +5.5V Input Range ■ 99% Voltage Conversion Efficiency ■ Typical 60µA Supply Current ■ Requires Only Three External Capacitors ■ Includes Low Power Shutdown Option ■ Ideal in Portable Applications Such As Handheld Instruments Cellular Phones Personal Digital Assistants Laptops and Notebooks ■ Pin Compatible Upgrade to Microchip's TC682 SP682 Micro Power Inverting Charge Pump TYPICAL APPLICATION CIRCUIT Corporation
APPLICATIONS
The SP682 is a monolithic charge pump voltage converter that produces a doubled, negative voltage from a single positive supply. The SP682 charge pump outputs a –10V voltage from a +5V input. Three external charge pump capacitors are required to support the voltage conversion and voltage doubling process. An internal oscillator generates a 12kHz clock which cycles the internal switching that charges the storage and transfer capacitors. The charge pump architecture is fabricated using a low power BiCMOS process technology. The SP682 charge pump is ideal for low power applications requiring a typical +3V battery source such as a lithium cell. Typical applications are handheld instruments, notebook and laptop computers, cellular phones, and data acquisition or GP systems. The SP682 is packaged in either 8-pin NSOIC, 8-pin MSOP for surface mount applications, and 8 Pin PDIP. +2.4V to +5V 1µF GND VOUT VCC SP682 C1+ C1– C2+ C2– COUT SD 8 VOUT- ■ LCD Display ■ Negative bias supply for op amps ■ Serial interface protocol circuits
DESCRIPTION
8 Pin MSOP
Date: 5/20/04 SP682 Micro Power Inverting Charge Pump © Copyright 2004 Sipex Corporation These are stress ratings only and functional operation of the device at these ratings or any other above those indicated in the operation sections of the specifications below is not implied. Exposure to absolute maximum rating conditions for extended periods of time may affect reliability. V TA = TMIN to TMAX and VCC = +5V. Charge pump cap = 3.3µF, unless otherwise noted. MIN. TYP. MAX. UNITS CONDITIONS SUPPLY CURRENT CHARGE PUMP CAPACITORS: 3.3µF ICC 60 120 µAR L = ∞, TA = +25°C 200 µAR L = ∞ in shutdown 1 µAT A = +25 O C, SD = +5V CHARGE PUMP OUTPUT CHARGE PUMP CAPACITORS: 3.3µF VOUT –9.9 –9.99 Volts R L = ∞ –9.0 –9.5 Volts R L = 2kΩ SOURCE RESISTANCE ROUT 140 180 Ω IL = 10mA, TA = +25°C 230 Ω IL = 10mA 380 450 Ω IL = 5mA, VCC = +2.8V OSCILLATOR FREQUENCY fOSC 12 20 kHz f osc = 2 X fC1+ CONVERSION EFFICIENCY VOUT EFF 99 99.9 % R L = ∞ VOUT EFF 90 95 % R L = 2kΩ START-UP TIMING VOUT Power On Delay 12 ms R L = 2kΩ SHUTDOWN TIMING Shutdown to VOUT Delay 5 ms R L = 2kΩ SUPPLY VOLTAGE VCC +2.4 +5.5 Volts Operating Temperature Range - C 0 +70 oC - E -40 +85 oC
ELECTRICAL CHARACTERISTICS
Power Dissipation: Package Derating: 8-pin NSOIC: ø 8-pin MSOP: 8-pin PDIP: ABSOLUTE MAXIMUM RATINGS
Table 1. ROUT .vs. C1, C2 Table 2. C3 .vs. VRIPPLE applications, reducing current to only 1 µA. capacitors still must be separate for each device. biasing LCD displays and panels. the pump capacitors can range from 1µF to 5µF.
Date: 5/20/04 SP682 Micro Power Inverting Charge Pump © Copyright 2004 Sipex Corporation PACKAGE: 8 PIN NSOIC SEE VIEW C Ø 1.65 DIMENSIONS Minimum/Maximum (mm)
8 Pin NSOIC
(JEDEC MS-012, AA - VARIATION) COMMON HEIGHT DIMENSION A b c L e E 1.35
4.90 BSC
0.40 0.31 0.51 SYMBOL MIN NOM MAX 0.10 - 0.25 D 1.75 1.25 0.17 0.25
6.00 BSC
3.90 BSC
1.27 BSC
1.27
1.04 REF
0.25 BSC
15º A A2 SEATING PLANE SIDE VIEW L ØØ1 Seating Plane Gauge Plane VIEW C TOP VIEW e E E/2 A INDEX AREA (D/2 X E1/2) E1/2 D b
8 PIN NSOICPACKAGE:
c WITH PLATING BASE METAL b CONTACT AREA
Date: 5/20/04 SP682 Micro Power Inverting Charge Pump © Copyright 2004 Sipex Corporation 0.07 - - L ØØ1 R Seating Plane E/2 E D Gauge Plane - - 1.10 0 - 0.15 Dimensions in (mm) 8-PIN MSOP JEDEC MO-187 (AA) Variation 0.75 0.85 0.95 0.22 - 0.38 0.08 - 0.23
3.00 BSC
0.40 0.60 0.80 - 8 - 0.07 - - 0º 8º A b c D E L N R Ø 0º - 15ºØ1 MIN NOM MAX e
1.95 BSC
0.65 BSC
Pin #1 indentifier must be indicated within this shaded area (D/2 * E1/2) e
0.95 REF
b c WITH PLATING BASE METAL (b) B B Section B-B PACKAGE: 8 PIN MSOP
Date: 5/20/04 SP682 Micro Power Inverting Charge Pump © Copyright 2004 Sipex Corporation PACKAGE: 8 PIN PDIP INDEX AREA eA eB E - - .210 .015 - Dimensions in inches8 PIN PDIP JEDEC MS-001 (BA) Variation .115 .130 .195 .014 .018 .022 .045 .060 .070 .240 .250 .280 A b c E e eA eB .115 .130 .150L MIN NOM MAX b3 .030 .039 .045 D .008 .010 .014 .355 .365 .400 .005 .300 .310 .325 .100 BSC .300 BSC .430 - - b N 1 23 N/2 EE1 c
8 PIN PDIP
c D A L b b2eb3
Date: 5/20/04 SP682 Micro Power Inverting Charge Pump © Copyright 2004 Sipex Corporation Sipex Corporation reserves the right to make changes to any products described herein. Sipex does not assume any liability aris ing out of the application or use of any product or circuit described hereing; neither does it convey any license under its patent rights nor the rights of others. Corporation ANALOG EXCELLENCE Part Number Temperature Range Package Types ORDERING IFORMATION /TR = Tape and Reel Pack quantity is 2,500 for NSOIC and MSOP. Sipex Corporation Headquarters and Sales Office
233 South Hillview Drive
Milpitas, CA 95035 TEL: (408) 934-7500 FAX: (408) 935-7600