Wiswood HX6202 Schematic [ru]
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Input Supple Range: 4.7V-5V
High Efficiency Current Mode PWM Controller
End - Charge - Current Detection Output
Constant Switching Frequency for Minimum
Noise
Automatic Battery Recharge
Automatic Shutdown When Input Supply is
Removed
Automatic Trickle Charging of Low Voltage
Batteries
Battery Temperature Sensing
Stable with Ceramic Output Capacitor
SOP-8L Package
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The HX6202 is a complete battery charger
controller for one (4.2V) cell lithium-ion battery.
The HX6202 provides a small, simple and efficient
solution to fast charge Li-ion battery. An external
sense resistor sets the charge current with high
accuracy.
An internal resistor divider and precision reference
set the final float voltage to 4.2V. When the input
supply is removed, the HX6202 automatically
enters a low current sleep mode.
The HX6202 is available in the SOP-8L package.
n
HX1001
HX6202
Charging Docks
Handheld Instruments
Portable Computers
1
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HHXX6622002
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C1
R1 300
R2
10K
Ω
1
EN
7
CHRG
8
TS FB
= 0.17V/R3.
OUT1
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＊
The charge current can be set by I
DC+
10uF
GND
VIN
GND
6
PROG
SW
5
3
4
2
L1 4.7uH
R3
VOUT
Battery
C2
20uF
PPiinn AAssssiiggnnmmeenntt
8 7 6 5
Top View
TS CHRG VIN GND
1 2 3 4
EN FB PROG SW
SOP-8L
PIN
NUMBER
1 EN
2 FB
3 PROG Charge Current Program
4 SW
5 GND
6 VIN
7 CHRG
8 TS Temperature Sense
PIN NAME
FUNCTION
ON/OFF Control
Feedback
Switch Output
Ground
Input
Open-Drain Charge Status for
Output
2
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HHXX6622002
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Operating Conditions: TA=25 , ℃VIN=5V, R3 = 0.1Ω unless otherwise specified.
SYMBOL
VIN Input Supply Voltage
IIN Input Supply Current
Regulated Output (Float)
Voltage
VOUT Pin Current
Precharge to fast-charge
）
transition threshold
V
V
I
（
FLOAT
OUT
LOWV
PARAMETER CONDITIONS MIN TYP MAX UNITS
Charge Mode
Standby Mode (Charge
Terminated)
0
℃≤
T
≤
85℃
, I
A
Standby Mode (Charge
Terminated), V
Shutdown Mode 4.3
Voltage on output pin 2.84 V
= 1.2A 4.15 4.2 4.24
OUT
= 4.2V
OUT
4.7 5.0 5.5 V
17
19.6
10.9
µ
A
V
µ
A
I
Trickle Charge Current V
TRIKL
V
TS-COLD
V
TS- HOT
I
TERM
VFB FB Pin Voltage Current Mode 0.17 V
f
OSC
TS Pin Threshold Voltage
（
Cold）
TS Pin Threshold Voltage
（
Hot）
Termination Current
Threshold
Switching Frequency 980 kHz
< V
BAT
VTS from Low to High
VTS from High to Low 0.5
202 mA
145 mA
TRIKL
2.5
V
3
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HHXX6622002
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VIN, CHRG, SW, PROG Voltage................................................................................. –0.3V to 6.5V
SW Pin Current ................................................................................................................ 3.8A
Operating Temperature Range (Note 2)............................................................... –40℃ to 85℃
Operating Junction Temperature (Note 3)................................................................. –40℃ to 125℃
Storage Temperature Range …………………………………………….................. –65 ℃to 125℃
Lead Temperature (Soldering, 10 sec)................................................................................. 300℃
Note 1: Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device.
Exposure to any Absolute Maximum Rating condition for extended periods may affect device reliability and lifetime.
Note 2: The HX6202 is guaranteed to meet performance specifications from 0°C to 85°C. Specifications over the –40°C
to 85°C operating temperature range are assured by design, characterization and correlation with statistical process
controls.
Note 3: This IC includes over temperature protection that is intended to protect the device during momentary overload.
Junction temperature will exceed 125°C when over te mperature protection is active. Continuous operation above the
specified maximum operating junction temperature my impair device reliability.
s (Note 1)
4
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