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NCP1835B

Features: • Integrated Voltage and Current Regulation• No External MOSFET, Sense Resistor or Blocking Diode Required• Charge Current Thermal Foldback• Integrated Pre−charge Current for Conditioning a Deeply Discharged Battery• Integrated End−of−Charg...

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SeekIC No. : 004432987 Detail

NCP1835B: Features: • Integrated Voltage and Current Regulation• No External MOSFET, Sense Resistor or Blocking Diode Required• Charge Current Thermal Foldback• Integrated Pre−ch...

NCP1835B Data Sheet

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Part Number:
NCP1835B
Supply Ability:
5000

Price Break

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

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Product Details

Description



Features:

• Integrated Voltage and Current Regulation
• No External MOSFET, Sense Resistor or Blocking Diode Required
• Charge Current Thermal Foldback
• Integrated Pre−charge Current for Conditioning a Deeply Discharged Battery
• Integrated End−of−Charge (EOC) Detection
• 1% Voltage Regulation
• 4.2 V Regulated Output Voltage
• Regulation Maintained without a Battery Present
• Programmable Full Charge Current
• Open−Drain Charger Status and Fault Alert Flags
• 2.8 V Output for AC Present Indication and Powering Charging Subsystems
• Minimum Input Voltage of 2.4 V Allows Use of Current Limited Adapters
• Automatically Recharging if Battery Voltage Drops after Charging Cycle is Completed
• Low Profile 3x3 mm DFN Package
• Pb−Free Package is Available


Application

• Wireless Headsets
• MP3 Players
• USB Appliances
• Battery Operated Devices


Pinout

Connection Diagram


Specifications

Rating
Symbol
Value
Units
Supply Voltage
VCC
7.0
V
Status Flag Output Pins
VFAULT, VCFLG
7.0
V
Voltage Range for Other Pins

Vio
5.5
V
Current Out from BAT Pin
IO
1.2
A
Thermal Characteristics
Thermal Resistance, Junction−to−Air (Note 3)
Power Dissipation, TA = 25°C (Note 3)
RJA
PD
68.5
1.09
°C/W
W
Moisture Sensitivity (Note 4)

MSL
Level 1
Operating Ambient Temperature
TA
−20 to 70
°C
Storage Temperature
Tstg
−55 to 125
°C
ESD
Human Body Model
Machine Model
HBM
MM
2000
200
V
V



Description

NCP1835B is an integrated linear charger specifically designed to charge 1−cell Li−Ion batteries with a constant current, constant voltage (CCCV) profile.

Its low input voltage capability, adjustable charge current, ability to maintain regulation without a battery, and its onboard thermal foldback make it versatile enough to charge from a variety of wall adapters. The NCP1835B can charge from a standard wall adapter orfrom the USB port. It has been optimized to charge low capacity
batteries such as those found in wireless headsets and flash memory−based MP3 players. It's recommended charge current rate is 30−300 mA.




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