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HM9902D Datasheet Preview

HM9902D Datasheet

One Cell Lithium-ion/Polymer Battery Protection

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HM9902D
___________________________________________________________________________________________________________________
One Cell Lithium-ion/Polymer Battery Protection IC
GENERAL DESCRIPTION
The HM9902D product is a high
integration solution for lithium-
ion/polymer battery protection.
HM9902D contains advanced power
MOSFET, high-accuracy voltage
detection circuits and delay circuits.
HM9902D is put into an SOP8-PP
package and only one external
component makes it an ideal solution in
limited space of battery pack.
HM9902D has all the protection functions
required in the battery application including
overcharging, overdischarging, overcurrent
and load short circuiting protection etc. The
accurate overcharging detection voltage
ensures safe and full utilization charging.
The low standby current drains little current
from the cell while in storage.
The device is not only targeted for digital
cellular phones, but also for any other
Li-Ion and Li-Poly battery-powered
information appliances requiring long-
term battery life.
FEATURES
· Protection of Charger Reverse
Connection
· Protection of Battery Cell Reverse
Connection
· Integrate Advanced Power MOSFET
with Equivalent of 17mΩ RDS(ON)
· SOP8-PP Package
· Only One External Capacitor
Required
· Over-temperature Protection
· Overcharge Current Protection
· Two-step Overcurrent Detection:
-Overdischarge Current
-Load Short Circuiting
· Charger Detection Function
· 0V Battery Charging Function
- Delay Times are generated inside
· High-accuracy Voltage Detection
· Low Current Consumption
- Operation Mode:6μ A typ.
- Power-down Mode: 3μ A typ.
· RoHS Compliant and Lead (Pb) Free
APPLICATIONS
One-Cell Lithium-ion Battery Pack
Lithium-Polymer Battery Pack
Figure 1. Typical Application Circuit
p
eCj p
Ki
N
W LL K
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H&M Semiconductor

HM9902D Datasheet Preview

HM9902D Datasheet

One Cell Lithium-ion/Polymer Battery Protection

No Preview Available !

HM9902D
_______________________________________________________________________________________________________________________
ORDERING INFORMATION
PART Pack
NUMBER age
HM9902D
SOP
8-PP
Overcharg
e Detection
Voltage
[VCU] (V)
4.425
Overcharge
Release
Voltage
[VCL] (V)
4.25
Overdischarge Overdischarge
Detection
Release
Voltage
Voltage
[VDL] (V)
[VDR] (V)
2.4
3.0
Overcurrent
Detection
Current
[IOV1] (A)
10
Top Mark
HM9902D
PIN CONFIGURATION
PIN DESCRIPTION
Figure 2. PIN Configuration
HM9902D PIN
NUMBER
1,2,3,4
5,7,8
6
9
PIN NAME
PIN DESCRIPTION
VM
GND
VDD
EPAD
The negative terminal of the battery pack. The internal FET switch
connects this terminal to GND
Ground, connect the negative terminal of the battery to this pin
Power Supply
Exposed padplease connect with GND of HM9902D
ABSOLUTE MAXIMUM RATINGS
(Note: Do not exceed these limits to prevent damage to the device. Exposure to absolute maximum rating
conditions for long periods may affect device reliability.)
PARAMETER
VDD input pin voltage
VM input pin voltage
Operating Ambient Temperature
VALUE
-0.3 to 6
-6 to 10
-40 to 85
UNIT
V
V
°C
p
eCj p
Ki
O
W LL K
K


Part Number HM9902D
Description One Cell Lithium-ion/Polymer Battery Protection
Maker H&M Semiconductor
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HM9902D Datasheet PDF






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