XC5101
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XC5101- 1A Linear Li-Ion Battery Charger GENERAL DESCRIPTION
The XC5101 is a complete constant current &
constant voltage linear charger for single cell lithium-ion batteries. Its SOP package and low external component count make the XC5101 ideally suited for portable applications.
Furthermore, the XC5101 is specifically designed to work within USB power specifications.
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No external n resistor is needed, and no blocking diode is required due to the internal MOSFET architecture. Thermal feedback regulates the charge current to limit the die
temperature during high power operation or high ambient temperature. The charge voltage is fixed at 4.21V, and the charge current can be
programmed externally with a single resistor. The XC5101 automatically terminates the charge cycle when the charge current drops to 1/10th the programmed value after the final float voltage is reached.
When the input supply (wall adapter or USB supply) is removed, the XC5101 automatically enters a low current state, dropping the battery drain current to less than 2uA. The XC5101 can be put into shutdown mode, reducing the supply current to 50uA.
Other features include Battery temperature monitor, under-voltage lockout, automatic
recharge and two status pins to indicate charge and charge termination.
FEATURES
Programmable Charge Current Up to 1000mA
No MOSFET, Sen Resistor or Blocking Diode
Complete Linear Charger in SOP Package for single Cell Lithium-
Constant-Current/Constant-Voltage Operation with Thermal Regulation to Maximize Charge
Rate Without Risk of Overheating
Charges Single Cell Li-Ion Batteries Directly from
Pret 4.21V Charge Voltage with ±1% Accuracy
Charge Current Monitor Output for Gas Gauging
Charge state pairs of output, no battery and fault
C/10
Soft-
Available in SOP8-PP Package
APPLICATIONS
Cellular Telephones, PDAs, MP3 /MP4 Players
日本爱情剧Charging Docks and Cradles Bluetooth 、GPS Applications
Figure1
Typical Application Circuit
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XC5101 ______________________________________________________________________________________________________________________ ORDERING INFORMATION
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PART NUMBER TEMP RANGE VIN VBAT
CHARGE
CURRENT
PACKAGE PINS
XC5101 -40°C to 85°C 4.5~6V 4.21V 1A SOP-PP 8 PIN CONFIGURATION
Figure 2. PIN Configuration
PIN DESCRIPTION
PIN NUMBER
PIN
NAME
PIN DESCRIPTION
1, TEMP Battery temperature detection input
调式调性
2 PROG Charge Current Program, Charge Current Monitor and Shutdown Pin.
3 GND Ground企业管理案例分析
4 VCC Positive Input Supply Voltage.
5 BAT Charge Current Output.
6 /STBY The completion of battery charging instructions side.
7 /CHRG Open-Drain Charge Status Output.
8 CE Chip enable input.
9 EPAD Ground and EPAD
ABSOLUTE MAXIMUM RATINGS
(Note: Do not exceed the limits to prevent damage to the device. Exposure to absolute maximum rating conditions for long periods may affect device reliability.)
PARAMETER VALUE UNIT Input Supply Voltage VCC VSS-0.3～VSS+7 V PROG pin Voltage Vprog VSS-0.3～Vcc+0.3 V BAT pin Voltage Vbat Vss-0.3～7 V
CHAG pin Voltage Vchrg VSS-0.3～VSS+7 V BAT pin Current Ibat 1.4 A PROG pin Current Iprog 1.4 mA Operating Ambient Temperature -40 to 85 °C Maximum Junction Temperature 150 °C Storage Temperature -55 to 150 °C Lead Temperature (Soldering, 10 c) 260 °C
ELECTRICAL CHARACTERISTICS
(V IN = 3.6V, T A= 25 C unless otherwi specified)
PARAMETER SYMBOL TEST CONDITIONS MIN TYP MAX UNIT Input Voltage Range VCC 4.25 6.5 V
Input supply current Icc Charge mode, RPROG =10K 350 2000 uA Standby mode 150 500 uA Shutdown mode(RPROG not
connected,Vcc<Vbat or Vcc<Vuv)
50 100 uA
BAT pin Current Ibat R PROG =2k,Current mode 450 500 550 mA R PROG =1k,Current mode 900 1000 1100 mA Standby mode,Vbat=4.2V 0 -2.5 -6 uA Shutdown mode 1 2.5 uA Sleep mode,Vcc=0V 0.3 2.5 uA
Regulated Charge Voltage Vfloat 0°C≤TA≤85°C, Icharge = 40mA 4.178 4.21 4.242 V PROG pin Voltage Vprog R PROG =1k, Current mode 0.93 1.0 1.07 V
Trickle charge current Itrikl Vbat<Vtrikl,Rprog=1k 90 100 110 mA Trickle charge Threshold
Voltage
Vtrikl R PROG =10K，Vbat Rising 2.8 2.9 3.0 V Trickle voltage hysteresis
voltage
Vtrhys R PROG =10K 60 80 110 mV Recharge Battery threshold
Voltage
ΔVrecg V FLOAT - V RECHRG150 300 mV CHRG pin Output low
voltage
Vchrg Ichrg=5mA 0.35 0.6 V STDBY pin Output low
voltage
Vstdby Istdby=5mA 0.35 0.6 V Enable Threshold VCC=4.25V~6.5V 0.3 1 1.5 V Enable Leakage Current -0.1 +0.1 uA
TEMP pin voltage of the high-end flip Vtemp-h 80 82 %Vc
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PIN FUNCTION
TEMP (PIN 1): Battery temperature detection input.
TEMP pin to receive the battery NTC nsor output.
If the TEMP pin voltage is less than the input voltage is greater than 45% or 80% of the input voltage means the battery temperature is too low or too high, then the charge has been suspended.
If the TEMPdirect access GND, battery temperature detection canceled, the other charged and functioning properly.
PROG (PIN 2): Charge Current Program, Charge Current Monitor and Shutdown Pin.
The charge current is programmed by connecting a 1% resistor, RPROG, to ground. When charging in constant-current mode, this pin rvos to 1V. In all modes, the voltage on this pin can be ud to measure the charge current using the following formula: IBAT = (VPROG/RPROG) x1000.
The PROG pin can also be ud to shut down the charger. Disconnecting the program resistor from ground allows a 3uA current to pull the PROG pin high. When it reaches the 1.21V shutdown thresho
ld voltage, the charger enters shutdown mode, charging stops and the input supply current drops to 50uA. This pin is also clamped to approximately 2.4V. Driving this pin to voltages beyond the clamp voltage will draw currents as high as 1.5mA. Reconnecting RPROG to ground will return the charger to normal operation.
GND (PIN 3): Ground.今年教师节
VCC (PIN 4): Positive Input Supply Voltage.
Provides power to the charger, VCC can range from 4.25V to 6.5V and should be bypasd with at least a 10uF capacitor. When VCC drops to within 30mV of the BAT pin voltage, the XC5101 enters shutdown mode, dropping IBAT to less than 2uA.
BAT (PIN 5): Charge Current Output.
Provides charge current to the battery and regulates the final float voltage to 4.2V. An internal precision resistor divider from this pin ts the float voltage which is disconnected in shutdown mode.
STDBY (PIN 6): The completion of battery charging instructions side.
When the battery charge is complete, STDBY pulled low by internal switches, indicating the completion of charging. In addition, STDBY pin will be in a high-impedance state.
CHRG (PIN 7): Open-Drain Charge Status Output.
When the battery is charging, the CHRG pin is pulled low by an internal N-channel MOSFET. When the charge cycle is completed, CHRG pin will be in a high-impedance state.
CE (PIN 8): Chip enable input.
High input level will make XC5101 in normal working condition; low input level so that XC5101 is prohibited charging status. CE pin can be TTL or CMOS level-level driver.
TEMP pin voltage of the low-end flip
Vtemp-l
43
45
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TYPICAL PERFORMANCE CHARACTERISTICS
白色的雪BATTERY CHARGER CURVE
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