Ordering Information:

Part No.

Package Type

Pack

Operating Temperature Range

OT23-6

Tape and Reel, 3000/Reel

40℃ to 85℃

Pin Description

No.

Name

Description

1

CSN

between VIN and CSN is needed to sense the inductor current. In normal

operation, (VIN－CSN) is between 120mV and 150mV(Typical).

2

FB

Battery Voltage Feedback Input. Generally, FB pin should be connected to

an external resistor divider to monitor the battery voltage. When the voltage at

FB pin rises to 1.205V (Typical), the

HM4033 enters termination mode, and

enters charge mode again if the voltage at FB pin falls below 1.155V(Typical).

3

VIN

The Positive Terminal of Input Supply. In addition to powering the internal

circuits, VIN pin also serves as the positive terminal of inductor current sense.

4

VCC

＋5V Regulator Output. Connect a 4.7uF or 10uF capacitor from VCC to

GND, the maximum output current is 5mA.

5

DRV

Gate Drive Output for External MOSFET. Connect to the gate of an

external N-channel MOSFET.

6

GND

Ground(GND).

ABSOLUTE MAXIMUM RATINGS

VIN ,CSN to GND…………….……－0.3V to 30V

Maximum Junction Temperature........………...150℃

VCC to GND………………….……－0.3V to 6.5V

Operating Temperature Range...........－40℃ to 85℃

CSN to VIN………………...………－0.3V to 0.3V

Storage Temperature Range.…........－65℃ to 150℃

FB，DRV……………………..….. －0.3V to VCC

Lead Temperature(Soldering,10S)…...…….....260℃

Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the

device. These are stress ratings only, and functional operation of the device at these or any other

conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure

to absolute maximum rating conditions for extended periods may affect device reliability.

HM4033