The JTMA3207 combines a constant-current/constant-volt-age l(2)

　　五,产品封装图 (Package)

FUNCTION

PIN		FUNCTION
NO.	NAME	FUNCTION
1
VIN	Charger Input Supply Pin. Provides power to the charger, VIN can range from 4.35V to 6.5V and should be bypassed with at least a 1µF capacitor.
2	BATT	Charger Output Pin. Connect this pin to the positive terminal of a Li+ battery.
4	LDOIN	LDO Regulator Input Supply Pin. Provides power to the regulator, VLDOIN can range from 3.6V to 6.5V and should be bypassed with at least a 1µF capacitor.
5	NC	No Connection.
6,7	LDOOUT	LDO Regulator Output. Fixed at 3.3V output, sourcing up to 150mA. The pin6 and pin7 must be connected together.
8	STAT	Open-Drain Charge Status Output Pin. When the battery is charging, the STAT pin is pulled low by an internal switch. In other states the STAT pin is in a high impedance state.
3,9	GND	Ground. Pin3 and pin9 must be connected together.
10	ISET	Charging Current Setting and Shutdown Pin. Connecting a resistor from this pin to GND set the charge current when the VIN is powering the charger. Disconnecting the RSET from GND allows an internal 2.5µA current to pull the ISET pin high, and when the ISET pin voltage exceeds the shutdown threshold voltage, the charger enters shutdown mode.
Bottom Pad	GND	Ground. Connect the bottom side metal pad to back side ground plane through several vias to improve power dissipation.

六.电路原理图