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ADP3801

Features: Stand-Alone Li-Ion Battery ChargersHigh End-of-Charge Voltage Accuracy60.4% @ +2560.75% @ 10 to +70Intelligent End-of-Charge Output SignalPin Programmable Cell Number SelectOn Chip 3.3 V LDO RegulatorProgrammable Charge Current with High Side SenseSoftstart Charge CurrentUndervoltage Loc...

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SeekIC No. : 004276722 Detail

ADP3801: Features: Stand-Alone Li-Ion Battery ChargersHigh End-of-Charge Voltage Accuracy60.4% @ +2560.75% @ 10 to +70Intelligent End-of-Charge Output SignalPin Programmable Cell Number SelectOn Chip 3.3 V L...

ADP3801 Data Sheet

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Part Number:
ADP3801
Supply Ability:
5000

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

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Product Details

Description



Features:

Stand-Alone Li-Ion Battery Chargers
High End-of-Charge Voltage Accuracy
   60.4% @ +25
   60.75% @ 10 to +70
Intelligent End-of-Charge Output Signal
Pin Programmable Cell Number Select
On Chip 3.3 V LDO Regulator
Programmable Charge Current with High Side Sense
Softstart Charge Current
Undervoltage Lockout
Drives External PMOS
610% Adjustable End-of-Charge Voltage
Charges NiCad, NiMH (with External mController)
PWM Oscillator Frequency:
   ADP3801: 200 kHz
   ADP3802: 500 kHz


Application

Fast Chargers
Universal Chargers
Cellular Phones
Portable Computers
Portable Instrumentation
Desktop Chargers
Personal Digital Assistants


Pinout

Connection Diagram


Specifications

Input Voltage (VCC to GND) . . . . . . . . . .. 0.3 V to 20 V
DRV, VCS+, VCS to GND . . . . . . . . . . . . . .0.3 V to VCC
BATA, BATB to GND . . . . . . . . . . . . . . . .0.3 V to 14.0 V
A/B, ISET, PROG, ADJ to GND . . . . . . . . . . . 0.3 V to VL
SD, RESET, COMP, EOC to GND . . . . . . . . .  0.3 V to VL
Power Dissipation . . . . . . . . . . . . . . .  Internally Limited
JA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75°C/W
Ambient Temperature Range . . . . . . 40°C to +85°C
Storage Temperature Range . . . . . 65°C to +150°C
Lead Temperature Range (Soldering 10 sec) .  +300°C


Description

The  ADP3801/ADP3802 are complete battery charging ICs. The devices combine a high accuracy final battery voltage control with a constant charge current control and an on-board Low Drop-Out Regulator (LDO). The accuracy of the final battery voltage control is guaranteed to ±0.75% to safely charge Li-Ion batteries. An internal multiplexer allows the alternate charging of two separate battery stacks. The final voltage is pin programmable to one of three Li-Ion options: 4.2 V (one Li-Ion cell), 8.4 V (two Li-Ion cells), or 12.6 V (three Li-Ion cells). Paired with an external microcontroller for charge termination, the ADP3801/ADP3802 works as a fast charger for NiCad/ NiMH batteries or as a universal charger for all three battery chemistries. In addition, a pin is provided for changing the final battery voltage by up to ±10% to adjust for variations in battery chemistry from different Li-Ion manufacturers without loss of accuracy in the final battery voltage.




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