CM9112 Datasheet, PDF (7/18 Pages) California Micro Devices Corp – Dual Inputs Dual Outputs High Accurate Fast Charger

Flow Chart
PRELIMINARY
CM9112
No
4.75V<VAD<6.5V
ADOK=0
No
USB > 4.5V
CHARGE STATE STAT1 STAT2
Yes
ADOK=1
Yes
VIN < BSEN
Sleep mode
Shut down LDO1 ,
VREF, Stop Charging
Precharge in progress ON
Fast charge in progress ON
Charge done
OFF
ON
OFF
ON
ENA = High
Stop charging
No Set STAT1=OFF,
Connect VSYS with
Battery through
external Q2
Timer fault
Sleep mode
OFF
OFF
OFF
OFF
Yes
Set Precharge Mode
STAT1=STAT2=ON
Start Timeout 1
STAT2=OFF
ENA has no effects
of VSYS output
Precharge
Mode
Iin > 1.5A
Tj > 150^oC
OCP
OTP
Shut down LDO, VREF,
Stop charging and Latch ;
Set STAT1=STAT2=OFF
Connect VSYS with Battery
through external Q 2
Shutdown mode
No
ADOK=1
Yes
Battery hot ,
cold
or removed
Stop Charging
Set
STAT1=STAT2=OFF
No
2.5V<THERM
<4.375V
Yes
Start Timeout 1; IVOUT ²⁵⁰⁰
VSYS=4.2V/500 mA
R_ISET2
IVOUT ²⁵⁰⁰
R_ISET1
No
BSEN > 3.3V
No
Yes
ADOK=1
Charge time >
Timeout 1
CC Mode Yes
Yes
Set CC mode
STAT1=ON,
STAT2=OFF
Stop charging
and Latch. Set
STAT1=STAT2=OFF
Yes
BSEN < 4.200V-100mV
Standby ^No
Mode
Battery
Temperature
Checking
Charge Done or
Battery is not
present
Timer
Fault
Stop charging
Stop Timeout 2;
Set STAT1=OFF
STAT2=ON
ADOK=1
Yes
2500
I VOUT
R _ISET2
No
2500
IVOUT
R _ISET1
Yes
No _{IVOUT <= 120}
R _ISET1
Yes
Reset
Timeout 2
No
BSEN >= 4.200V
CV Mode No
S^Ye^et^sCV Mode
ADOK=1
Yes
Start Timeout 2
Yes
Charge time > ^No
Timeout 2
Yes
No
IVOUT<= ¹²⁰
R _ISET2
Note:IfThermisused,duringanychargingmode,removingabatterywillcausetheCVmode,thentermination,theequivalent
tochargedone.Untilthebatteryisreturned,thechargerwillcyclebetweenstandbymodeandre-chargecycle.
© 2006 California Micro Devices Corp. All rights reserved.
07/06/06 490 N. McCarthy Blvd., Milpitas, CA 95035-5112 lTel: [phone] lFax: [phone] lwww.cmd.com
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