PRELIMINARY
CM9100
Basic Compact Cost-effective Fast-Charger
Features
•
•
•
•
Monolithic linear charger requires no inductors,
external sense resistors or blocking diodes.
A few external components are required
4.75V to 6.5V operating input voltage range.
Programmable the charging current to achieve the
fastest charging rate without the risk of overloading
the adapter
Thermal limit control of charging current prevents
overheating
Maximum of 1µA battery drain current
Charging-current monitor output for system super-
vision of charging status
TQFN-16, RoHS compliant lead-free package
Product Description
The CM9100 is an integrated linear-mode charger for
single-cell, Lithium-ion batteries. It designed for com-
pact and cost-sensitive handheld devices. It provides
programming charge current, charge status indicator,
high accuracy fast charge current and automatic
charge voltage regulation. It requires no external block-
ing diodes or current sense resistors and needs only
one external resistor to program the charging current.
The CM9100 provides Precharge, Fast-charge (con-
stant-current), and Termination (constant-voltage)
charging modes. The Precharge/Termination currents
are preset to 10/5% of the Fast-charge current level. A
host system can monitor the actual charge current at
the ISET pin.
When the chip temperature reach 140°C, the CM9100
goes into a latched shutdown mode stop charging until
the chip temperature is below 140°C will gradually
charge and 105°C resume fast charge. When the
adapter is not present, the CM9100 draws less than
1µA of drain current from the battery in ultra low power
sleep mode.
The CM9100 is packaged in a miniature 16-pin TQFN.
It can operate over the ambient temperature range of
-40°C to 85°C.
•
•
•
•
Applications
•
•
•
•
Cellular phones and smart phones
PDAs Portable Media Viewers
Digital Still Camera
Cradle Chargers
Typical Application
Vin
VIN
4.7u
5k
1k
VOUT
4.7u
GND
ISET
VSTB
1u
CM9100
STAT
Li-ion
Battery
VREF
0.1u
©
2006 California Micro Devices Corp. All rights reserved.
06/30/06
490 N. McCarthy Blvd., Milpitas, CA 95035-5112
l
Tel: 408.263.3214
l
Fax: 408.263.7846
l
www.cmd.com
1
PRELIMINARY
CM9100
Package Pinout
PACKAGE / PINOUT DIAGRAM
TOP VIEW
(Pins Down View)
Pin 1
Marking
VSTB
VIN
NC
NC
BOTTOM VIEW
(Pins Up View)
13
14
15
16
15
14
13
NC
GND
NC
VREF
1
12 NC
12
11
10
9
16
1
CM910
000QE
2
3
4
11 VOUT
10 NC
9 STAT
GND
PAD
2
3
4
8
7
6
ISET 5
NC 6
NC 7
CM9100-00QE
16-Lead TQFN Package (4mm x 4mm)
Note: This drawing is not to scale.
LEAD(s)
NAME
DESCRIPTION
1
2
3
4
NC
GND
NC
VREF
ISET
No connect.
Ground pin.
No connect.
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
ISET
= 1000
×
2.5
V
-----------------------------
-
I
CC
5
6
7
8
9
10
11
12
13
14
NC
NC
NC
STAT
NC
VOUT
NC
VSTB
NC
No connect.
No connect.
No connect.
Charging status indicator pin (open-drain output).
No connect.
Charger output pin
No connect.
4.2V output pin, connect a cap to ground to increase stability.
No connect.
©
2006 California Micro Devices Corp. All rights reserved.
2
NC 8
PIN DESCRIPTIONS
490 N. McCarthy Blvd., Milpitas, CA 95035-5112
l
Tel: 408.263.3214
l
5
Fax: 408.263.7846
l
www.cmd.com
06/30/06
PRELIMINARY
CM9100
Pin Descriptions (cont’d)
PIN DESCRIPTIONS
15
16
NC
VIN
No connect.
Positive input supply voltage pin, which powers the charger.
Ordering Information
PART NUMBERING INFORMATION
Lead Free Finish
Pins
16
Package
TQFN
Ordering Part Number
1
CM9100-00QE
Part Marking
CM910 000QE
Note 1: Parts are shipped in Tape & Reel form unless otherwise specified.
Specifications
ABSOLUTE MAXIMUM RATINGS
PARAMETER
ESD Protection (HBM)
V
IN
to GND
Pin Voltages
V
OUT
, V
REF
, V
STB
to GND
I
SET,
STAT to GND
Storage Temperature Range
Operating Temperature Range (Ambient)
Lead Temperature (Soldering, 10sec)
RATING
±2
[GND - 0.3] to +6.5
[GND - 0.3] to +6.5
[GND - 0.3] to +6.5
-65 to +150
-40 to +85
300
UNITS
kV
V
V
V
°C
°C
°C
ELECTRICAL OPERATING CHARACTERISTICS
(SEE NOTE 1)
SYMBOL
V
IN
I
Q
PARAMETER
VIN Supply Voltage
Quiescent Current
CONDITIONS
V
IN
Charging modes, exclud-
ing current to ISET and
STAT pins. All outputs are
at no load.
V
IN
= 0V (100Ω - resistor
to ground), V
BAT
= 4.2V
V
OUT
< 3.2V
0.85 x I
PR
MIN
4.75
TYP
2
MAX
6.5
UNITS
V
mA
V
SHDN
Battery Drain Current
0.5
1
µA
Charger Function
I
PR
Precharge Mode Current
I
PR
250
= -----------------------
-
R
SET
(
kΩ
)
3.30
1.14 x I
PR
mA
T
CC
CC Mode Voltage Threshold
3.20
3.40
V
©
2006 California Micro Devices Corp. All rights reserved.
06/30/06
490 N. McCarthy Blvd., Milpitas, CA 95035-5112
l
Tel: 408.263.3214
l
Fax: 408.263.7846
l
www.cmd.com
3
PRELIMINARY
CM9100
Specifications (cont’d)
ELECTRICAL OPERATING CHARACTERISTICS
(SEE NOTE 1)
SYMBOL
I
CC
PARAMETER
CONDITIONS
CC Mode Charging Current V
OUT
> 3.5V
MIN
0.92 x I
CC
TYP
2500
I
CC
= -----------------------
-
R
SET
(
kΩ
)
4.200
100
I
TERM
= -----------------------
-
R
SET
(
kΩ
)
4.100
105
140
1.0
120
4.200
4.200
MAX
1.08 x
I
CC
4.210
1.2 x
I
TERM
4.110
125
150
1.1
150
4.210
4.300
0.1
0.5
UNITS
mA
V
CC
I
TERM
CV Mode Voltage Threshold
Charge Termination Current V
OUT
> 4.190V
4.190
0.8 x
I
TERM
4.090
(Note 2)
(Note 3)
(Note 4)
I
CC
= 500mA
I
REF
< 1mA
95
130
0.9
100
4.190
4.100
I
SINK
= 5mA
I
SINK
= 20mA
V
mA
V
RCH
Recharge Mode Threshold
Constant-temperature
Mode, Limit
Over-temperature Protec-
tion, Limit
Over-Current Charging
(OCP), Limit
R
DSON
of Charger MOSFET
Regulated Voltage V
REF
Regulated Voltage V
STB
V
C
C
A
mΩ
V
V
V
V
OTP
OCP
VREF
V
REF
VSTB
V
STB
Control Function
STAT
STAT (Open Drain) Output
Low Voltage
Note 1: V
IN
= 5.0V. All outputs are on. T
A
= 25°C unless otherwise specified.
Note 2: When chip temperature reaches 105°C, the IC’s internal thermal limit will maintain this temperature by decreasing the pro-
grammed charge current
Note 3: When chip temperature reaches 140°C, the IC goes into a latched shutdown mode. It stops charging, stops supplying
V
OUT
). To resume the charging function, a toggle of V
IN
is required.
Note 4: When charging current reaches 1.2A, the IC goes into shutdown, latched mode only toggled V
IN
could resume the function.
©
2006 California Micro Devices Corp. All rights reserved.
4
490 N. McCarthy Blvd., Milpitas, CA 95035-5112
l
Tel: 408.263.3214
l
Fax: 408.263.7846
l
www.cmd.com
06/30/06
PRELIMINARY
CM9100
Typical Performance Curves
Charging Algorithm
Battery Emulator, Cbattery = 30 mF
R
ISET
= 5 k
Ω
Ichg_cc=500mA
CV mode = 4.2V
Battery voltage
Battery voltage
Charge current
CC mode = 3.3V
Charge current
Ichg_pr=50mA
Ichg_term=25mA
Time (2 ms/div)
Time (2 ms/div)
Battery Current Thresholds
Battery Voltage Thresholds
Functional Block Diagram
VIN
OCP
Current
Limit
CM9100
VSTB
VOUT
OTP
GND
Over-Temp
Limit
Qc
VREF
LDO
Charger
Control
STAT
ISET
©
2006 California Micro Devices Corp. All rights reserved.
06/30/06
490 N. McCarthy Blvd., Milpitas, CA 95035-5112
l
Tel: 408.263.3214
l
Fax: 408.263.7846
l
www.cmd.com
5
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