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부품번호 AAT3620 기능
기능 1-Cell Li+ Switch Mode Battery Charger
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AAT3620 데이터시트, 핀배열, 회로
www.DataSheet4U.com
BatteryManagerTM
PRODUCT DATASHEET
AAT3620178
1-Cell Li+ Switch Mode Battery Charger
General Description
The AAT3620 BatteryManager™ is a member of
AnalogicTech’s Total Power Management IC™ family.
With the many functions added to mobile devices such
as color display, camera with flash, organizer, video, etc,
the battery capacity must keep pace with the power
requirements. The AAT3620 is the ideal solution for high
capacity Li+ batteries and can supply up to 2.0A charge
current with minimal thermal impact to the system.
The AAT3620 is a PWM switch mode / linear charger with
high charge efficiency at the full constant current (fast
charge) rate. Based on a 1.5MHz PWM step-down “buck”
converter, the AAT3620 PWM switch mode controls the
constant current charge mode up to 2.0A, and auto-
matically switches to linear mode charging during the
battery conditioning low level current and the light load
end of charge current termination region. The full charge
rate and the end of charge current can be programmed
with separate external resistors. A shared charge current
indication pin is available for a Coulomb counter.
Battery charge temperature and charge state are fully
monitored for fault conditions. In the event of an over-
current, over-voltage, short-circuit or over-temperature
failure, the device will automatically shut down. A status
monitor output pin is provided to indicate the battery
charge status and power source status though a display
LED.
The AAT3620 is available in a thermally enhanced,
space-saving 14-pin 3x3mm TDFN package that includes
all essential components for a switch-mode battery
charger.
Features
• 4.3V~6.0V Input Range
• Up to 2.0A Charge Current Capability
• 1.5MHz PWM/Linear Charger
• Over 90% Full Rate Charge Efficiency
• Integrated Switching Device
• Integrated Sense Resistor
• Built-in Reverse Blocking Feature
• Battery Preconditioning/Constant Voltage/Constant
Current Charge Mode
• Programmable End of Charge Current
• 1% Constant Voltage Mode Regulation
• Built-in Programmable Charging Timer
• Charge Current Indication Pin
• Over-Voltage, Over-Current, and Over-Temperature
Protection
• Battery Over-Temperature Protection
• Power-On Reset and Soft-Start
• TDFN33-14 Package
Applications
• Digital Camcorders
• Point of Service (POS)
• Portable DVD Players
• Portable Hand-held Solutions
• Portable Media Player
Typical Application
4.7µH
Adapter
Charge Enable
Timer Disable
Charging Status 1
Charging Status 2
22µF
0.1µF
CS
VPIN
VCC
EN
0.1µF
CT
LX
BAT
PGND
TS
STAT1
ISET
STAT2
TERM
GND
RTERM
Battery
BATT + Pack
22µF
to 47µF
BATT-
+
TEMP
Charge Current Set
Termination Current Set
and Charge Current Indicator
R SET
3620.2009.01.1.0
www.analogictech.com
1




AAT3620 pdf, 반도체, 판매, 대치품
www.DataSheet4U.com
BatteryManagerTM
PRODUCT DATASHEET
AAT3620178
1-Cell Li+ Switch Mode Battery Charger
Electrical Characteristics1
VIN = 5.5V, TA = -25°C to 85°C; unless otherwise noted, typical values are at TA = 25°C.
Symbol Description
Operation
VIN Adapter Input Voltage
VVIN_UVLO Input Under-Voltage Lockout
Conditions
VPIN Rising
Hysteresis
Min
4.3
3.5
VVIN_SLEEP Input Sleep Voltage
No Charge if VVIN < VVIN_SLEEP
IVIN_OP
IVIN_STBY
IVIN_SHDN
IFWD_LKG
Operating Supply Current
Standby Supply Current
Shutdown Supply Current
Forward Leakage Current, Measured
from LX to Ground
IREV_LKG
IBAT_LKG
RDS(ON)
Reverse Leakage Current, Measured
from LX to VIN
Bat Pin Leakage Current
Internal PMOS On Resistance
Internal NMOS On Resistance
fSW PWM Switching Frequency
Charge Regulation
VBAT_REG Output Charge Voltage Regulation
tSOFT_START Charging Soft-Start Delay
VBAT_BC
Battery Conditioning Battery Voltage
Threshold
ICH_BC
ICH_BC_TYP
Battery Conditioning Charge Current
Typical Battery Conditioning Charge
Current Setting Range
tCH_BC
ICH_CC
ICH_CC_TYP
tCH_CCFAST
Battery Conditioning Time Out
Constant-Current (Cc) Battery Charge
Current
Typical Constant-Current (Cc) Battery
Charge Current Setting Range
Fast Constant Current Charge Time
Out (Bccc + Ccv)
tCH_CV Constant Voltage Charge Time Out
VBAT_RCH Battery Recharge Voltage Threshold
EN = High, Charge Current = 200mA
EN = High, No Charge
EN = Low, LX Floating
EN = Low, LX = 5.5V
EN = Low or High, VIN = 0V,
LX = 5.5V
VBAT = 4.2V, VIN = 0V or open
VIN = 5.5V
VIN = 5.5V
VBAT = 3.6V
Delay of Charge from EN, or VVIN_UVLO,
or VVIN_ADPP
Preconditioning Battery Charge when
VBAT < VBAT_BC
When VBAT < VBAT_BC
Stop Charge if Preconditioning Time
is more than tCH_TKL
When VBAT_BC < VBAT < VBAT_REG
Stop Charge if Fast Charge Time is
more than tCH_CCFAST
Stop Charge if Charge Time is more
than tCH_CV
If VBAT Falls Below VBAT_RCH, Recharge
Starts
1.2
4.158
2.4
100
-15%
-15%
1
-15%
-15%
ITERM
ITERM_TYP
Charge Termination Threshold Current Terminate CV Charge if ICH < ITERM
Typical Termination Threshold Current
Setting Range
-10
50
Typ
150
VBAT
+ 0.05
170
120
1.5
4.20
100
2.6
ICH_ CC
x 0.1
0.25
x CCT
ICH_CC
0.02
x CCT
0.03
x CCT
VBAT_REG
- 0.1
RTERM
x 10-6
Max Units
6.0
4.3
VBAT
+ 0.2
5
2
10
1
1
1
300
250
1.8
V
V
mV
V
mA
mA
μA
μA
μA
μA
mΩ
mΩ
MHz
4.242
V
us
2.8 V
A
200 mA
+15% Minute/nF
+15
%
2A
+15% Hour/nF
+15% Hour/nF
V
10 %
200 mA
1. Specification over the –25°C to +85°C operating temperature range is assured by design, characterization and correlation with statistical process controls.
4
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3620.2009.01.1.0

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AAT3620 전자부품, 판매, 대치품
www.DataSheet4U.com
BatteryManagerTM
Typical Characteristics
Charge Current vs. Input Voltage
(T = -25°C)
2400
2100
1800
1500
1200
900
600
300
0
4.0 4.2 4.4 4.6 4.8
5.0 5.2
VBAT = 2.7V
VBAT = 3.3V
VBAT = 3.6V
VBAT = 3.9V
5.4 5.6 5.8 6.0
Input Voltage (V)
PRODUCT DATASHEET
AAT3620178
1-Cell Li+ Switch Mode Battery Charger
Charge Current vs. Input Voltage
(T = 85°C)
2500
2000
1500
1000
500
0
4.0
VBAT = 2.7V
VBAT = 3.3V
VBAT = 3.6V
VBAT = 3.9V
4.5 5.0 5.5
6.0
Input Voltage (V)
6.5
3620.2009.01.1.0
www.analogictech.com
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AAT3620

1-Cell Li+ Switch Mode Battery Charger

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