CALMIRCO CM9156B

PRELIMINARY
CM9156B
Charge-Pump White LED Driver
Features
Product Description
•
•
•
•
•
•
•
•
•
•
•
•
•
CM9156B is an efficient 1.5x switched capacitor
(charge pump) regulator ideal for white LED applications. 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
CM9156B can be operated from a single-cell Li-Ion
battery.
•
•
3.0V to 6.5V input voltage range
Dual mode operation; 1x and 1.5x
Fixed 4.5V output with initial accuracy of ± 2%
Supports up to 180mA (@4V) output
High efficiency at both high and low input voltage
Low external parts count, requires no inductor
PWM brightness control via the ENA pin
Selectable 262kHz or 650kHz switching frequency
Low shutdown current of <1µA
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-10 or MSOP-10 package
Optional RoHS compliant lead free package
Applications
²
²
²
²
•
Drive white LEDs to backlight color LCDs
Drive white or RGB LEDs for camera flash
Cellular phones
MP3 players
PDAs, GPS
It features an efficient, 1.5x charge-pump circuit that
uses only two 1.0µF ceramic bucket capacitors and
two small capacitors for VIN and VOUT. The CM9156B
offers a selectable switching frequency of 262kHz or
650kHz. The LED brightness can be adjusted by applying a PWM signal on the ENA pin.
The CM9156B output voltage is regulated to 4.5V, ±
5% over the line and load ranges. Up 180mA of output
current is available. The proprietary design architecture maintains high efficiency (> 80%), and at low VIN
provides longer battery life. With a high VIN, or when
the adapter is powered, it provides cool reliable operation. It offers low output voltage ripple, typically less
than 50mV. Internal over-temperature and over-current
management provide short circuit protection.
The CM9156B is packaged in either a space saving
10-Lead TDFN or 10-Lead MSOP package. It can
operate over the industrial temperature range of –
25-°C to 85-°C.
.
Typical Application
4.5V
1.0uF
1.0uF
V OUT
C 2P
C 1P
C 1N
TM
PhotonIC
3.0V to 6.0V
V IN
CM9156B
1.0uF
1.0uF
GND
C 2N
CLK
E NA
© 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
PRELIMINARY
CM9156B
Package Pinout
PACKAGE / PINOUT DIAGRAM
TOP VIEW
VOUT
1
10
C2P
C1P
2
9
C1N
VIN
3
8
GND
CLK
4
7
C2N
NC
5
6
ENA
TOP VIEW
BOTTOM VIEW
(Pins Down View)
(Pins Up View)
10 9 8 7 6
1 2 3 4 5
CMxxx
xxxxxx
GND
PAD
Pin 1
Marking
10 9 8 7 6
1 2 3 4 5
CM9156B-01DE
10 Lead TDFN Package
CM9156B-01MR
10 Lead MSOP Package
Note: This drawing is not to scale.
Ordering Information
PART NUMBERING INFORMATION
Lead-free Finish
Pins
Package
Ordering Part Number1
10
TDFN
CM9156B-01DE
10
MSOP
CM9156B-01MR
Part Marking
Note 1: Parts are shipped in Tape & Reel form unless otherwise specified.
Specifications
ABSOLUTE MAXIMUM RATINGS
PARAMETER
RATING
UNITS
±2
kV
VIN to GND
[GND - 0.3] to +6.5
V
Pin Voltages
VOUT to GND
C1P, C1N to GND
ENA, CLK to GND
[GND - 0.3] to +6.0
[GND - 0.3] to +4.5
[GND - 0.3] to +6.0
V
V
V
ESD Protection (HBM)
Storage Temperature Range
-65 to +150
°C
Operating Temperature Range
-40 to +85
°C
300
°C
Lead Temperature (Soldering, 10s)
© 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
PRELIMINARY
CM9156B
Specifications (cont’d)
ELECTRICAL OPERATING CHARACTERISTICS
SYMBOL
VIN
PARAMETER
CONDITIONS
MIN
3.0
VIN Supply Voltage
ISD
Shut-Down Supply
Current
IQ
Quiescent Current
TYP
MAX
6.0
1
ENA = 0
UNITS
V
µA
Fs = 262 kHz
800
1200
µA
Fs = 650 kHz
1600
2500
µA
4.2
4.5
4.7
V
Vin = 3.0V to 3.2V
Iout = 60 mA,
4.0
4.1
4.2
V
Vin = 3.2V to 6.5V
4.4
4.5
4.6
V
Vin = 3.0V to 3.2V
Vout = 4.5V
4.0
4.1
4.3
120
V
mA
180
Charge-pump Circuit
Fs = 262 kHz or 650 kHz,
Iout = 0 mA to 120 mA,
VR LOAD
Load Regulation
Vin = 3.2V to 6.5V
Iout = 0 mA to 90 mA,
VR LIN
IOUT
Line Regulation
Output Current
VOUTR
Output Ripple Voltage
fs
Switching Frequency
Vout = 4.0V
Fs = 262 kHz, Iout = 60 mA
CLK = 0
50
262
mA
mV
kHz
CLK = 1
650
kHz
CLK
High Level Input Voltage
Low Level Input Voltage
1.2
VIH
High Level Input Voltage
1.3
VIL
Low Level Input Voltage
0.6
V
V
0.4
V
600
mA
ENA
Protection
ILIM
V
Over-Current Limit
400
TJSD
Over-Temperature Limit
135
ºC
THYS
Over-Temperature Hysteresis
15
ºC
© 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
3
PRELIMINARY
CM9156B
Typical Performance Curves
CIN=COUT=C1=C2=1.0μF, TA=25ºC, unless specified
Efficiency
Iout=120mA
Iout=60mA
100
100
90
Efficiency (%)
Efficiency (%)
Efficiency
80
70
60
90
80
70
60
50
3.0
3.5
4.0
4.5
5.0
5.5
50
3.0
6.0
3.5
Input Voltage (V)
5.0
5.5
6.0
650 kHz Load Regulation
262 kHz Load Regulation
4.75
5 Vin
5 Vin
4.50
Vout (V)
Vout (V)
4.5
Input Voltage (V)
4.75
4.25
3.4 Vin
3.6 Vin
4.00
4.50
3.6 Vin
3.4 Vin
4.25
4.00
10
30
50
70
90
110
10
Load Current (mA)
50
70
90
110
Line Regulation
Iout=120mA
4.6
4.5
4.5
4.4
4.4
Vout (V)
4.6
4.3
4.2
4.1
4.0
3.00
30
Load Current (mA)
Line Regulation
Iout=60mA
Vout (V)
4.0
4.3
4.2
4.1
4.00
5.00
6.00
4.0
3.00
4.00
Vin (V)
5.00
6.00
Vin (V)
© 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
04/26/06
PRELIMINARY
CM9156B
Typical Performance Curves (cont’d)
CIN=COUT=C1=C2=1.0μF, TA=25ºC, unless specified
No Load Input Current
Vout vs. Temperature
Vin = 3.6V
2000
4.550
650kHz
4.525
Vout (V)
Iq (ȝA)
1600
262kHz
1200
800
4.500
4.475
400
3.2
4.450
3.6
4.0
4.4
4.8
5.2
5.6
6.0
-40
-15
Vin (V)
Switching Frequency - 262kHz
35
60
85
Switching Frequency - 650kHz
278
690
Frequency (kHz)
Frequency (kHz)
10
Temperature (ºC)
270
85ºC
262
20ºC
254
670
85ºC
650
20ºC
630
- 40ºC
246
3.2
3.4
-40ºC
3.6
3.8
4.0
4.2
4.4
4.6
610
3.2
3.4
Input Voltage (V)
3.6
3.8
4.0
4.2
4.4
4.6
Input Voltage (V)
© 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
5
PRELIMINARY
CM9156B
Typical Performance Curves (cont’d)
CIN=COUT=C1=C2=1.0μF, TA=25ºC, unless specified
Vin = 3.8V
Vin = 3.8V
Iout=120 mA
Iout=120 mA
Iout=60 mA
Iout=60 mA
100 mV/div
100 mV/div
Output Ripple, 262 kHz
Output Ripple, 650 kHz
Vin, 2V/div
Vout, 2V/div
Iin, 200 mA/div
Vin=3.8V
1 ms/div
Startup
Frequency Selection Table
Switching Frequency
262kHz
650kHz
CLK1
0
1
Table 1: Frequency Selection
© 2006 California Micro Devices Corp. All rights reserved.
6
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
PRELIMINARY
CM9156B
Functional Block Diagram
3.0V T O 6.0V
1.0uF
1.0uF
E NA
V IN
C 1P
L DO
Pre- R egulator
C 1N
1.0uF
C 2P
C 2N
1.5x C harge Pump
4.5V
V OUT
1.0uF
OS C
C ounter
Driver
GND
CM9156B
CLK
Pin Descriptions
PIN DESCRIPTIONS
LEAD(s)
NAME
DESCRIPTION
1
VOUT
The regulated 4.5V output voltage pin. This pin requires a 1.0μF or larger ceramic
capacitor to ground. This pin connects to the anodes of the LEDs.
2
C1P
This pin is the plus side of charge-pump bucket capacitor C1. Connect a 1.0μF
ceramic capacitor with a voltage rating of 10V or greater between C1N and C1P.
3
VIN
Positive supply voltage input pin. This voltage should be between 3.0V and 6V.
This pin requires a 1.0μF or larger ceramic capacitor to ground.
4
CLK
Pin for setting switching frequency (see Table 1 on page 6)
5
NC
Pin not connected.
6
ENA
Enable pin, active high. By applying a PWM signal to this pin, the LED brightness
can be controlled.
7
C2N
This pin is the minus side of charge-pump bucket capacitor C2. Connect a 1.0μF
ceramic capacitor between C2N and C2P.
8
GND
Ground pin.
9
C1N
This pin is the minus side of charge-pump bucket capacitor C1. Connect a 1.0μF
ceramic capacitor between C1N and C1P.
10
C2P
This pin is the plus side of charge-pump bucket capacitor C2. Connect a 1.0μF
ceramic capacitor between C2N and C2P.
© 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
7
PRELIMINARY
CM9156B
Application Information
The CM9156B is a switched capacitor, charge pump
voltage converter ideally suited for driving white LEDs
to backlight or sidelight LCD color displays for portable
devices, such as cellular phones, PDAs, and any application where small space and efficiency are critical.
The CM9156B charge pump is the perfect driver for
such portable applications, providing efficiency, compact overall size, low system cost and minimum EMI.
The CM9156B contains a linear low dropout (LDO)
regulator followed by a 1.5x fractional charge pump
that converts the nominal lithium-ion (Li-Ion) or lithium
polymer battery voltage levels (3.6V) by a gain of 1.5
times and regulates the converted voltage to 4.5V,
±5%, enough to drive the forward voltage drop of white
LEDs. The CM9156B requires only two external
switched, or bucket, capacitors, plus an input and an
output capacitor, providing for a compact, low profile
design. In many applications, all these can conveniently be the same value of 1.0μF, commonly available
in a compact 0805 surface mount package.
put capacitors are charged during the power-up of the
device.
The input voltage, VIN, passes through an LDO preregulator that compares the output voltage to a precision bandgap reference. After the LDO, the charge
pump boosts the LDO voltage by 1.5 times. A feedback
circuit to the LDO monitors the output voltage, and
when the output voltage reaches 4.5V, the LDO output
will operate at about 3V, regulating the device output at
1.5 x 3V = 4.5V.
The charge pump uses two phases from the oscillator
to drive internal switches that are connected to the
bucket capacitors, C1 and C2, as shown in Figure 1. In
the first switch position, the bucket capacitors are connected in series and each are charged from the LDO to
a voltage of VLDO/2. The next phase changes the
switch positions so that C1 and C2 are put in parallel,
and places them on top of VLDO. The resulting voltage
across COUT is then; VLDO+1/2VLDO = 1.5 x VLDO.
The CM9156B is intended for white LED applications,
but it can drive most all types of LEDs with a forward
voltage drop of less than 4V.
VOUT
ILED =
C OUT
VIN
The LED current is determined by its series resistor,
RLED, and is approximately;
C1
½ VLDO
FB
LDO
VLDO
4.5 V − VFWD _ LED
RLED
C2
½ VLDO
Typical white LEDs have a forward voltage drop,
VFWD_LED, of 3.5V to 3.7V. Like single-junction devices,
white LEDs often have poorly matched forward voltages. If the LEDs were put in parallel without a series
resistor, the current in the paralleled branches would
vary, resulting in non-uniform brightness. RLED, in addition to setting the current, compensates for this variation by functioning as a ballast resistor, providing
negative feedback for each paralleled LED.
Charge C1 and C2 to ½ V
LDO
VOUT
VIN
C1
C OUT
½ VLDO
FB
LDO
VLDO
CM9156B Operation
C2
½ VLDO
When a voltage exceeding the undervoltage lockout
threshold (UVLO) is applied to the VIN pin, the
CM9156B initiates a softstart cycle, typically lasting
1000μs. Softstart limits the inrush current while the out-
Figure 1. Switch operation
© 2006 California Micro Devices Corp. All rights reserved.
8
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
PRELIMINARY
CM9156B
Application Information (cont’d)
When the input voltage is greater then the output voltage, then all this sophistication, and the accompanying
power loss, is unnecessary. The smart CM9156B
knows this, and if the input voltage rises above 5V, the
charge pump automatically disables, removing the voltage gain stage and the output is then provided directly
through the LDO, regulated at 4.5V. This increases the
efficiency and minimizes chip heating in this operating
condition.
The CM9156B has over-temperature and over-current
protection circuitry to limit device over-stress and failure during short circuit conditions. An overcurrent condition will limit the output current (approximately
400mA ~ 600mA) and will cause the output voltage to
drop, until automatically resetting after removal of the
excessive current. Over-temperature protection disables the IC when the junction is about 135-ºC, and
automatically turns-on the IC when the junction temperature drops by approximately 15-ºC.
For an ideal 1.5x charge pump, IIN = 1.5 x IOUT, and the
efficiency may be expressed as;
POUT ⎛ VOUT × IOUT ⎞
VOUT
⎟=
≈ ⎜⎜
⎟ 1.5 × V
PIN
V
1
.
5
I
×
×
OUT ⎠
IN
⎝ IN
VOUT = 4.5V,
∴ η≈
4.5V
1.5 × VIN
The ideal 2x charge pump can be similarly expressed;
P OUT
4.5V ------------- ≈ ---------------------P IN
2.0 × V IN
In 1x mode, when the input voltage is above the output
voltage, the part functions as a linear regulator and the
ideal efficiency is simply Vout/Vin.
The typical conversion efficiency plots for these modes,
with some losses, are shown in Figure 2.
A conventional charge pump with a fixed gain of 2x will
usually develop more voltage than is needed to drive
paralleled white LEDs from Li-Ion sources. This excessive gain develops a higher internal voltage, reducing
system efficiency and increasing battery drain in portable devices. A fractional charge pump with a gain of
1.5x is better suited for driving white LEDs in these
applications.
The CM9156B charge pump automatically switches
between 2 conversion gains, 1x and 1.5x, allowing high
efficiency levels over a wide operating input voltage
range. The 1x mode allows the regulated LDO voltage
to pass directly through to the output when sufficient
input voltage is available; the 1.5x charge pump is
enabled only when the battery input is too low to sustain the output load.
At nominal loads, the switching losses and quiescent
current are negligible. If these losses are ignored for
simplicity, the efficiency, , for an ideal 1.5x charge
pump can be expressed as the output power divided by
the input power;
P OUT
η ≈ ------------P IN
Efficiency
Vout=4.5V
100
Efficiency (%)
Efficiency
1X
85
70
CM9156B
dual mode
55
1.5X
2X
40
3.0
3.5
4.0
4.5
5.0
5.5
6.0
Input Voltage (V)
Figure 2. Ideal efficiency curves
As can be seen, the CM9156B, with 1x and 1.5x
modes, has better efficiency in this application than a
fixed 2x charge pump. At low battery voltages, the
higher efficiency of the CM9156B charge pump’s 1,5x
gain reduces the battery drain. At higher input voltages, above 4.9V typically seen when the system is
running off an AC adapter, the CM9156B, operating the
© 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
9
PRELIMINARY
CM9156B
Application Information (cont’d)
1x mode, has better efficiency than single mode 1.5x
or 2x charge pumps, lowering the power dissipation for
cooler circuit operation and long life.
LED Brightness Control
CM9156B Design Example
Capacitor Selection
The external bucket capacitors will affect the output
impedance of the converter, so surface-mount, low
ESR ceramic capacitors are recommended. Tantalum
and Aluminum capacitors should not be used because
their ESR is too high. The ceramic dielectric must be
stable over the operating temperature and voltage
range, X7R or X5R dielectrics are recommended. In
noise sensitive applications, output ripple can be further reduced by increasing the capacitance of the output capacitor. Reflected input ripple current depends
on the impedance of the VIN source, which includes
the PCB traces. Increasing the input capacitor will
reduce this ripple. The input capacitor also affects the
output voltage ripple. All the capacitors should be
located close to the device for best performance.
Frequency Selection
The optimal switching frequency depends on the allowable system current draw, the load current, ripple and
EMI requirements. The CM9156B’s operating frequency choices are 262kHz or 650kHz. These two frequencies are selected by programming the CLK input.
Refer to Table 1. The supply current for a charge pump
is proportional to its switching frequency. A lower
switching frequency allows reduced quiescent current
for more efficient operation, but reduces the output current capability and in some cases, causes higher ripple. Higher frequencies are used when larger load
currents are demanded.
The frequency is typically selected to achieve maximum efficiency while avoiding sensitive frequencies
with the switching fundamental and its harmonics. The
switching frequency can be set outside the critical frequency spectrums of cellular communications bandwidths. Once set, the switching frequency and its
harmonics remain fixed, making filtering easy.
V in
VOUT
C 2P
C 1P
C 1N
VIN
GND
C 2N
C LK
ENA
CM9156B
PWM input
Figure 3. PWM brightness control, lowered
quiescent current
Changes in ambient light often require the backlight
display intensity to be adjusted, usually to conserve
battery life. There are simple solutions to lowering the
LED brightness when using the CM9156B.
A PWM signal applied to the ENA pin can be used to
control the brightness, which is more efficient than
other solutions that dissipate unwanted LED current in
the series resistors. It also maintains the white LED
color fidelity by avoiding color temperature variations
that come with bias current changes. The LED intensity
is determined by the PWM duty cycle, which can vary
from 0% to 100%.
In the configuration shown in Figure 3, the brightness
is controlled by the PWM signal applied to the LEDs.
Decreased Duty Cycle will lower the LED brightness,
See Figure 4 and Figure 5. The same signal is also
applied to the CM9156B, reducing the charge pump
switching frequency via the CLK control. When the
PWM signal is high, CLK goes high, the operating frequency is 650kHz (refer to Table 1), and the LED current path is complete through the switch. When the
PWM signal is low, the LED current is stopped as the
switch turns off, and the switching frequency of the
charge pump becomes 262kHz (CLK = 0). Operating
the charge pump at the lower frequency lowers the quiescent current when the charge pump is operational
(the input voltage below 5V).
© 2006 California Micro Devices Corp. All rights reserved.
10 490 N. McCarthy Blvd., Milpitas, CA 95035-5112
l
Tel: 408.263.3214
l
Fax: 408.263.7846
l
www.cmd.com
04/26/06
PRELIMINARY
CM9156B
Application Information (cont’d)
Camera Flash Application
Many smart phones and PDAs include a digital camera. These cameras typically utilize a WLED flash to
illuminate the picture subject in low light conditions.
The CM9156B is easily adapted to such an application.
Figure 6 is a typical application using the CM9156B as
a WLED flash driver, which is ideal for this application
because it is capable of driving up to 180mA from a Liion battery. The One-shot is used to create a single
pulse of a set duration to the ENA pin of the CM9156B.
C2N, 5V/div
PWM, 20 kHz,
60% D.C., 5V/div
Vout ripple,
200 mV/div
Iin, 200 mA/div
Vin=3.8V
The Flash LED modules shown here contain three
matched WLEDs with a common anode and separated
cathodes. The series resistor is chosen based on the
forward drop of the module LEDs (typically 3.3V to
3.8V) and the number of parallel LEDs being driven.
20 uSec/div
Figure 4. High brightness waveforms
The recommended PWM frequency is between 100 Hz
and 20kHz. If a frequency of less then 100 Hz is used,
flicker might be seen in the LEDs. The frequency
should also be greater than the refresh rate of the TFT
display. Higher frequencies will cause a loss of brightness control linearity. In addition, higher frequency can
cause chromaticity shifts because the fixed rise and fall
times of the PWM signal will shift the forward current.
V in
VOUT
C 2P
C 1P
C 1N
VIN
GND
C 2N
C LK
R CAT HODE
R CAT HODE
ENA
CM9156B
One- shot
Pulse
Flash
t
C2N, 5V/div
Figure 6. Camera flash application
PWM, 20 kHz,
10% D.C., 5V/div
Layout Guide
Vout ripple,
200 mV/div
Iin, 200 mA/div
Vin=3.8V
20 uSec/div
Figure 5. Low brightness waveforms
The charge pump is rapidly charging and discharging
its external capacitors, so external traces to the capacitors should be made as wide and short as allowable to
minimize inductance and high frequency ringing. The
four capacitors should be located as close as practical
to the charge-pump, particularly C1 and C2, which
have the highest dv/dt. Connect ground and power
traces to the capacitors through short, low impedance
paths. Use a solid ground plane, ideally on the backside of the PCB, which should carry only ground potential. Connect the ground-side of Cin, Cout and the chip
GND as close as practical. For best thermal performance, the exposed backside lead frame should be
soldered to the PCB.
© 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
11
PRELIMINARY
CM9156B
Mechanical Details
TDFN-10 Mechanical Specifications
Dimensions for the CM9156B packaged in a 10-lead
TDFN package are presented below.
Mechanical Package Diagrams
For complete information on the TDFN-10, see the California Micro Devices TDFN Package Information document.
D
10 9 8 7 6
PACKAGE DIMENSIONS
TDFN
JEDEC
No.
MO-229 (Var. WEED-3)=
Leads
10
E
Package
Dim.
Millimeters
Pin 1
Marking
Inches
Min
Nom
Max
Min
Nom
Max
A
0.70
0.75
0.80
0.028
0.030
0.031
1 2 3 4 5
A1
0.00
0.02
0.05
0.000
0.001
0.002
TOP VIEW
A2
0.45
0.55
0.65
0.018
0.022
0.026
b
0.20
0.18
D
D2
0.30
0.007
3.00
2.20
E
E2
0.25
0.008
2.30
e
1.50
0.012
0.118
2.40
0.087
3.00
1.40
0.010
0.10 C
0.091
0.08 C
0.094
A1
0.118
1.60
0.055
0.50
0.060
A
SIDE VIEW
A3 A2
0.063
0.020
K
1.30
1.50
1.70
0.051
0.060
0.067
L
0.20
0.30
0.40
0.008
0.012
0.016
# per
tube
NA
# per
tape and
reel
3000 pieces
1
2
3
4
5
Pin 1 ID
C0.35
E2
A3
GND PAD
L
D2
Controlling dimension: millimeters
=This package is compliant with JEDEC standard MO-229, variation
WEED-3 with exception of the "D2" and "E2" dimensions as called
out in the table above.
10
K
9
8
7
6
b
e
8X
BOTTOM VIEW
0.10
M
CAB
Package Dimensions for 10-Lead TDFN
© 2006 California Micro Devices Corp. All rights reserved.
12 490 N. McCarthy Blvd., Milpitas, CA 95035-5112
l
Tel: 408.263.3214
l
Fax: 408.263.7846
l
www.cmd.com
04/26/06
PRELIMINARY
CM9156B
Mechanical Details (cont’d)
MSOP-10 Mechanical Specifications:
Mechanical Package Diagrams
The CM9156B is supplied in a 10-pin MSOP. Dimensions are presented below.
TOP VIEW
For complete information on the MSOP-10, see the
California Micro Devices MSOP Package Information
document.
D
10
9
8
6
7
PACKAGE DIMENSIONS
Package
MSOP
Pins
10
Dimensions
Pin 1
Marking
Millimeters
Inches
Min
Max
Min
Max
A
0.75
0.95
0.030
0.038
A1
0.05
0.15
0.002
0.006
B
0.17
0.33
0.007
0.013
C
0.15
0.30
0.006
0.018
D
2.90
3.10
0.114
0.122
E
2.90
3.10
0.114
0.122
e
0.50 BSC
0.0197 BSC
H
4.90 BSC
0.193 BSC
L
# per tape
and reel
0.40
E
H
0.70
0.0157
1
2
3
5
4
SIDE VIEW
A
SEATING
PLANE
A1
B
e
0.0276
END VIEW
4000
C
Controlling dimension: inches
L
Package Dimensions for MSOP-10
© 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
13