CM2835 [CHAMP]
300mA CMOS LDO; 300毫安CMOS LDO
| 型号： | CM2835 |
| 厂家： | 
CHAMPION MICROELECTRONIC CORP. |
| 描述： | 300mA CMOS LDO |
| 文件： | 总9页 (文件大小：346K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
CM2835
300mA CMOS LDO
GENERAL DESCRIPTION
FEATURES
The CM2835 family is a positive voltage linear regulator
developed utilizing CMOS technology featured low quiescent
current (30μA typ.), low dropout voltage, and high output
voltage accuracy, making them ideal for battery applications.
EN input connected to CMOS has low bias current. The
space-saving SOT-23 and SOT-89 package is attractive for
“Pocket” and “Hand Held” applications.
Very Low Dropout Voltage
Low Current Consumption: Typ. 30μA, Max. 35μA
Output Voltage: 1.8V, 2.5V, 3.0V, and 3.3V
High Accuracy Output Voltage: +/- 1.5%
Guaranteed 300mA Output
Input Range up to 7.0V
Thermal Shutdown
Current Limiting
These rugged devices have both Thermal Shutdown, and
Current limit to prevent device failure under the “Worst” of
operating conditions.
Stability with Low ESR Capacitors
Compact Package: SOT-23, SOT-89
Factory Pre-set Output Voltages
Low Temperature Coefficient
The CM2835 is stable with a Low ESR output capacitance of
1.0μF or greater.
APPLICATIONS
Battery-powered devices
Personal communication devices
Home electric/electronic appliances
PC peripherals
TYPICAL APPLICATIONS
CM2835
IN
OUT
IN
OUT
GND
C1
1uF
C2
1.0uF
5V
2006/10/11 Rev1.4
Champion Microelectronic Corporation
Page 1
CM2835
300mA CMOS LDO
PIN CONFIGURATION
SOT-23
SOT-89
Top View
Top View
3
2
1
BLOCK DIAGRAM
IN
OUT
Overcurrent
Shutdown
R1
Thermal
Shutdown
-
AMP
+
R2
GND
2006/10/11 Rev1.4
Champion Microelectronic Corporation
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CM2835
300mA CMOS LDO
ORDERING INFORMATION
Part Number
CM2835DIM23
CM2835DIM89
CM2835KIM23
CM2835KIM89
CM2835PIM23
CM2835PIM89
CM2835SIM23
CM2835SIM89
CM2835GDIM23
CM2835GDIM89
CM2835GKIM23
CM2835GKIM89
CM2835GNIM23
CM2835GNIM89
CM2835GPIM23
CM2835GPIM89
CM2835GSIM23
CM2835GSIM89
Output Voltage
Temperature Range
-40℃ ~ +85℃
-40℃ ~ +85℃
-40℃ ~ +85℃
-40℃ ~ +85℃
-40℃ ~ +85℃
-40℃ ~ +85℃
-40℃ ~ +85℃
-40℃ ~ +85℃
-40℃ ~ +85℃
-40℃ ~ +85℃
-40℃ ~ +85℃
-40℃ ~ +85℃
-40℃ ~ +85℃
-40℃ ~ +85℃
-40℃ ~ +85℃
-40℃ ~ +85℃
-40℃ ~ +85℃
-40℃ ~ +85℃
Package
SOT-23
SOT-89
SOT-23
SOT-89
SOT-23
SOT-89
SOT-23
SOT-89
SOT-23
SOT-89
SOT-23
SOT-89
SOT-23
SOT-89
SOT-23
SOT-89
SOT-23
SOT-89
1.8V
1.8V
2.5V
2.5V
3.0V
3.0V
3.3V
3.3V
1.8V
1.8V
2.5V
2.5V
2.8V
2.8V
3.0V
3.0V
3.3V
3.3V
Note: For other pre-set output voltage requirements, please contact Champion Sales office.
ABSOLUTE MAXIMUM RATINGS
OPERATING RATINGS
Input Voltage …………….……………………………. +7V
Ambient Temperature Range (TA) ……... -40℃ to +85℃
Junction Temperature Range …..…..... -40℃ to +150℃
Output Current …………………….……
PD / (VIN - Vo) mA
Output Voltage …………………… GND-0.3V to VIN+0.3V
ESD Classification ………………………………………… B
THERMAL INFORMATION
Parameter
Maximum
170
Unit
℃/W
SOT-23
SOT-89
SOT-23
SOT-89
SOT-23
SOT-89
Thermal Resistance (Θjc)
100
330
300
225
℃/W
Thermal Resistance (Θja)
Internal Power Dissipation (PD)
(ΔT = 100℃)
mW
400
Maximum Junction Temperature
Maximum Lead Temperature (10 Sec)
150
300
℃
℃
*With Junction sink capable of twice times ofΘjc
Caution: Stress above the listed absolute rating may cause permanent damage to the device.
2006/10/11 Rev1.4
Champion Microelectronic Corporation
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CM2835
300mA CMOS LDO
ELECTRICAL CHARACTERISTICS
TA = +25℃; unless otherwise noted
CM2835
Unit
Parameter
Symbol
Test Conditions
Min.
Note 1
-1.5
Typ.
Max.
7
Input Voltage
VIN
V
Output Voltage Accuracy
VOUT
IO = 1mA to 300mA
1.5
%
1.2V<VO(NOM) ≤2.0V
2.0V<VO(NOM) ≤2.5V
1300
400
300
IO = 300mA,
Dropout Voltage
VDROPOUT
mV
V
OUT=VO(NOM)-1.5%,
2.5V<VO(NOM)
Output Current
Current Limit
IO
ILIM
VOUT > 1.2V
300
300
mA
mA
μA
μA
%
VOUT > 1.2V
IO = 0mA
450
30
Quiescent Current
IQ
35
50
0.1
1
Ground Pin Current
Line Regulation
IGND
IO = 1mA to 300mA
IOUT=5mA, VIN=VOUT+1 to VOUT+2
IO=1mA to 300mA
30
REGLINE
REGLOAD
OTS
OTH
TC
-0.1
0.02
0.2
150
30
Load Regulation
%
℃
Over Temperature Shutdown
Over Temperature Hysteresis
VOUT Temperature Coefficient
℃
40
ppm/℃
f=1kHz
IO = 100mA
60
Power Supply Rejection
PSRR
PSRR
dB
dB
f=10kHz
50
CO=2.2μF ceramic
f=100kHz
40
f=1kHz
f=10kHz
75
IO = 100mA
Power Supply Rejection
Output Voltage Noise
CO=2.2μF ceramic
55
C
BYP=0.01μF
f=100kHz
CO=2.2μF
CO=100μF
CO=2.2μF
CO=100μF
30
f=10Hz to 100kHz
IO = 10mA, CBYP=0μF
f=10Hz to 100kHz
30
eN
eN
μVrms
μVrms
20
30
Output Voltage Noise
IO = 10mA, CBYP=0.01μF
20
Note 1. VIN(MIN) = VOUT + VDROPOUT
2006/10/11 Rev1.4
Champion Microelectronic Corporation
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CM2835
300mA CMOS LDO
DETAILED DESCRIPTION
The CM2835 family of CMOS regulators contain a PMOS pass transistor, voltage reference, error amplifier, over-current
protection, thermal shutdown.
The P-channel pass transistor receives data from the error amplifier, over-current protection, and thermal protection circuits.
During normal operation, the error amplifier compares the output voltage to a precision reference. Over-current and Thermal
shutdown circuits become active when the junction temperature exceeds 150℃, or the current exceeds 300mA. During thermal
shutdown, the output voltage remains low. Normal operation is restored when the junction temperature drops below 120℃.
The CM2835 switches from voltage mode to current mode when the load exceeds the rated output current. This prevents
over-stress.
EXTERNAL CAPACITOR
The CM2835 is stable with a Low ESR output capacitor to ground of 1.0μF or greater. It can keep stable even with higher ESR
capacitors. A second capacitor is recommended between the input and ground to stabilize VIN. The input capacitor should be
larger than 0.1μF to have a beneficial effect. All capacitors should be placed in close proximity to the pins. A “quiet” ground
termination is desirable.
TYPICAL CHARACTERISTICS
2006/10/11 Rev1.4
Champion Microelectronic Corporation
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CM2835
300mA CMOS LDO
2006/10/11 Rev1.4
Champion Microelectronic Corporation
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CM2835
300mA CMOS LDO
PACKAGE DIMENSION
SOT-23 (M23)
D
3
b1
With Plating
A
A1
A2
b
b
Base Metal
b1
c
Section B-B
c1
D
E
E1
L
1
2
e
b
L1
e
e1
e1
θ
θ1
θ2
L
See Section B-B
L1
SOT-89 (M89)
D
D1
φ1.0
C
e
e1
A
L
b
b1
C
D
D1
H
E
e1
e
b
b
b1
2006/10/11 Rev1.4
Champion Microelectronic Corporation
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CM2835
300mA CMOS LDO
NUMBERING SCHEME
Ordering Number: CM2835XYZ (note1)
Ordering Number: CM2835GXYZ (note2)
note1:
CM2835: 300mA CMOS LDO with enable
X : Suffix for voltage output (note 3)
Y : Suffix for Temperature Range (note 4)
Z : Suffix for Package Type (note 5)
note2:
CM2835: 300mA CMOS LDO with enable
G : Suffix for Pb Free Product
X : Suffix for voltage output (note 3)
Y : Suffix for Temperature Range (note 4)
Z : Suffix for Package Type (note 5)
note 3: see CMOS LDO Voltage Suffix Table
CM2835 will provide options of D(1.8V), K(2.5V), P(3.0V), S(3.3V)
note 4:
Y= I : -40℃~+85℃ (only I grade support for all CMOS LDOs)
note 5:
Z is single alphabet with or without digits
M23 : SOT-23 (TR only)
M89 : SOT-89 (TR only)
CMOS LDO Voltage Suffix Table
Output Voltage
1.5V
Suffix
A
Output Voltage
3.0V
Suffix
P
1.6V
1.7V
1.8V
1.9V
2.0V
2.1V
2.2V
2.3V
B
C
D
E
F
G
H
I
3.1V
3.2V
3.3V
3.4V
3.5V
3.6V
3.7V
3.8V
3.9V
4.0V
Q
R
S
T
U
V
W
X
Y
Z
2.4V
2.5V
2.6V
J
K
L
2.7V
2.8V
2.9V
M
N
O
2006/10/11 Rev1.4
Champion Microelectronic Corporation
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CM2835
300mA CMOS LDO
IMPORTANT NOTICE
Champion Microelectronic Corporation (CMC) reserves the right to make changes to its products or to discontinue any integrated
circuit product or service without notice, and advises its customers to obtain the latest version of relevant information to verify,
before placing orders, that the information being relied on is current.
A few applications using integrated circuit products may involve potential risks of death, personal injury, or severe property or
environmental damage. CMC integrated circuit products are not designed, intended, authorized, or warranted to be suitable for
use in life-support applications, devices or systems or other critical applications. Use of CMC products in such applications is
understood to be fully at the risk of the customer. In order to minimize risks associated with the customer’s applications, the
customer should provide adequate design and operating safeguards.
HsinChu Headquarter
Sales & Marketing
5F, No. 11, Park Avenue II,
Science-Based Industrial Park,
HsinChu City, Taiwan
7F-6, No.32, Sec. 1, Chenggong Rd., Nangang
District, Taipei City 115, Taiwan
TEL: +886-3-567 9979
FAX: +886-3-567 9909
TEL: +886-2-2788 0558
FAX: +886-2-2788 2985
2006/10/11 Rev1.4
Champion Microelectronic Corporation
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