2006 California Micro Devices Corp. All rights reserved.
04/26/06
490 N. McCarthy Blvd., Milpitas, CA 95035-5112
l
Tel: 408.263.3214
l
Fax: 408.263.7846
l
www.cmd.com
1
CM9153
PRELIMINARY
Features
3.0V to 6.5V input voltage range
Two mode operation; 1x and 1.5x
Fixed 4.5V output with initial accuracy of 2%
Supports 150mA (@4V) continuous output current
High efficiency at both high and low input voltages
Low external parts count, requires no inductor
PWM brightness control via the ENA pin
650
-
kHz switching frequency
Low shutdown current of <1A
Soft start prevents excessive inrush current
Over temperature and over current protection
Low output ripple (<1%), low EMI
Input protection provides superior ESD rating,
requiring only standard handling precautions
TDFN-8 or MSOP-8 package
Optional RoHS compliant lead free packageing
Applications
Drive white LEDs to backlight color LCDs
Drive white or RGB LEDs for camera flash
Cellular phones
MP3 players
PDAs, GPS
Product Description
The CM9153 is an efficient 1.5x switched capacitor
(charge pump) regulator ideal for white LED applica-
tions. It has a regulated 4.5V, 120mA output, capable
of driving up to six parallel white LEDs. With a typical
operating input voltage range from 3.0V to 6.0V, the
CM9153 can be operated from a single cell Li-Ion bat-
tery.
It features an efficient, 1.5x charge pump circuit that
uses only two 1.0
F ceramic bucket capacitors and
two small capacitors for VIN and VOUT. The LED
brightness can be adjusted by applying a PWM signal
on the ENA pin.
The CM9153 output voltage is regulated to 4.5V, 5%
over the line and load ranges. Up 150mA of output cur-
rent is available. A proprietary design architecture
(patent pending) maintains high efficiency (> 80%), at
both below 3.2 V
IN
, resulting in longer battery life, and
above 5.25 V
IN
, when an adapter is plugged in, keep-
ing the part cool. It offers low output voltage ripple, typ-
ically less than 50mV. Internal over-temperature and
over-current management provide short circuit protec-
tion.
The CM9153 is packaged in either a space-saving 8-
lead TDFN or 8-lead MSOP package. It can operate
over the industrial temperature range of 25
C
to 85
C
.
.
1.0uF
1.0uF
4.5V
3.0V to 6.0V
1.0uF
C 1P
V OUT
V IN
C 1N
C 2P
GND
E NA
C 2N
CM9153
1.0uF
PhotonIC
TM
Typical Application
Charge Pump White LED Driver
2006 California Micro Devices Corp. All rights reserved.
2
490 N. McCarthy Blvd., Milpitas, CA 95035-5112
l
Tel: 408.263.3214
l
Fax: 408.263.7846
l
www.cmd.com
04/26/06
CM9153
PRELIMINARY
Ordering Information
Note 1: Parts are shipped in Tape & Reel form unless otherwise specified.
Specifications
PACKAGE / PINOUT DIAGRAM
Note: This drawing is not to scale.
8 Lead MSOP Package
1
2
3
4
8
7
6
5
C2P
VOUT
C1P
VIN
C1N
GND
C2N
ENA
TOP VIEW
CM9153-01DE
8 Lead TDFN Package
GND
4
3
2
1
4
3
2
1
5
6
7
PAD
5
6
7
8
8
Pin 1
Marking
BOTTOM VIEW
(Pins Up View)
TOP VIEW
(Pins Down View)
CM9153-01MR
PART NUMBERING INFORMATION
Leads
Package
Lead-free Finish
Ordering Part Number
1
Part Marking
8
TDFN
CM9153-01DE
8
MSOP
CM9153-01MR
ABSOLUTE MAXIMUM RATINGS
PARAMETER
RATING
UNITS
ESD Protection (HBM)
2
kV
VIN to GND
[GND - 0.3] to +6.5
V
Pin Voltages
V
OUT
to GND
C1P, C1N to GND
C2P, C2N to GND
[GND - 0.3] to +6.0
[GND - 0.3] to +4.5
[GND - 0.3] to +4.5
V
V
V
Storage Temperature Range
-65 to +150
C
Operating Temperature Range
-40 to +85
C
Lead Temperature (Soldering, 10s)
300
C
Package Pinout
PDF 
ZIP
