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LM2685

Features: ·+5V regulated output·Inverts V05(+5V) to VNEG(−5V)·Doubles input supply voltage·TSSOP-14 package·80% typical conversion efficiency at 25mA·Input voltage range of 2.85V to 6.5V·Independent shutdown control pinsApplication·Cellular phones·Pagers·PDAs·Handheld instrumentation·3.3V to...

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SeekIC No. : 004394997 Detail

LM2685: Features: ·+5V regulated output·Inverts V05(+5V) to VNEG(−5V)·Doubles input supply voltage·TSSOP-14 package·80% typical conversion efficiency at 25mA·Input voltage range of 2.85V to 6.5V·Indep...

LM2685 Data Sheet

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Part Number:
LM2685
Supply Ability:
5000

Price Break

  • Qty
  • 1~5000
  • Unit Price
  • Negotiable
  • Processing time
  • 15 Days
Total Cost: $ 0.00

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Upload time: 2025/3/13

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Product Details

Description



Features:

·+5V regulated output
·Inverts V05(+5V) to VNEG(−5V)
·Doubles input supply voltage
·TSSOP-14 package
·80% typical conversion efficiency at 25mA
·Input voltage range of 2.85V to 6.5V
·Independent shutdown control pins


Application

·Cellular phones
·Pagers
·PDAs
·Handheld instrumentation
·3.3V to 5V voltage conversion applications


Pinout

Connection Diagram


Specifications

If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
Supply Voltage (VIN to GND or
GND to VNEG)....................................................... 6.8V
SDN, SDP, CE .......................................(GND − 0.3V) to
                      ............................................(VIN + 0.3V)
V05 Continuous Output Current ..........................80mA
V05 Short-Circuit Duration to GND (Note 2) ...Indefinite
Continuous Power Dissipation (TA
= 25) (Note 3) ...............................................600mW
TJMAX (Note 3) ....................................................150
qJA (Note 3) ....................................................140/W
Operating Ambient Temp. Range............ −40 to 85
Operating Junction Temp. Range.......... −40 to 125
Storage Temp. Range ...........................−65 to 150
Lead Temp. (Soldering, 10 sec.) ..........................300
ESD Rating (Note 4) ...............................................2kV


Description

The LM2685 CMOS charge-pump voltage converter operates as an input voltage doubler, +5V regulator and inverter for an input voltage in the range of +2.85V to +6.5V. Five low cost capacitors are used in this circuit to provide up to 50mA of output current at +5V (± 5%), and 15mA at −5V. The LM2685 operates at a 130 kHz switching frequency to reduce output resistance and voltage ripple. With an operating current of only 800A (operating efficiency greater than 80% with most loads) and 6A typical shutdown current, the LM2685 is ideal for use in battery powered systems. The device is in a small 14-pin TSSOP package.




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