CM9112 Datasheet, PDF (2/18 Pages) California Micro Devices Corp – Dual Inputs Dual Outputs High Accurate Fast Charger

PRELIMINARY
CM9112
Package Pinout
Pin 1
Marking
PACKAGE / PINOUT DIAGRAM
TOP VIEW
(Pins Down View)
BOTTOM VIEW
(Pins Up View)
USB 1
GND 2
ISET1 3
VREF 4
12 BSEN
11 VOUT
10 THERM
9 STAT1
12
1
11
GND
2
PAD
10
3
9
4
Note: This drawing is not to scale.
CM9112-00QE
16-Lead TQFN Package (4mm x 4mm)
LEAD(s)
1
2
3
4
5
6
7
8
9
10
NAME
USB
GND
ISET1
VREF
ISET2
ENA
CT
STAT2
STAT1
THERM
PIN DESCRIPTIONS
DESCRIPTION
USB compliant power input pin.
Ground pin.
Pin to set the maximum USB input current; Also, reflects actual charging current. A
resistor between this pin and ground sets the charge current,
I_CH,
R_{I S E T 1}
=
1_---0_---0_---0_{-- ---}×_{-- ---}2_---._-5_----V--
I _{C C}
4.2V, 2mA reference output pin.
Pin to set the maximum charging current in the Fast charge (CC) mode. Also,
reflects actual charging current. A resistor between this pin and ground sets the
charge current, I_CH,
R_{I S E T 2}
=
1_---0_---0_---0_{-- ---}×_{-- ---}2_---._-5_----V--
I_{C C}
Enable pin. Logic high (default value) enables charging. Logic low disables charg­
ing. ENA does not effect the VSYS output.
Pin for capacitor, C_T, for programming the Precharge and Termination timeout
period.
Timeout1[min]=300 x C_T[μF]
Timeout2[min]=600 x C_T[μF]
Charging status indicator 2 pin (open-drain output).
Charging status indicator 1 pin (open-drain output).
Thermistor input pin from battery monitoring circuit.
© 2006 California Micro Devices Corp. All rights reserved.
2 490 N. McCarthy Blvd., Milpitas, CA 95035-5112 lTel: [phone] lFax: [phone] lwww.cmd.com
07/06/06