CM2865(A)E5
350mA CMOS LDO
HIGH ACCURACY VOUT 1.0%
GENERAL DESCRIPTION
The CM2865/A 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. Built-in low on-resistance transistor provides
low dropout voltage and large output current. A 1.0μF or
greater can be used as an output capacitor.
The SOT-89 and SOT-223 packages are attractive for
“Pocket” and “Hand Held” applications.
These robust devices are designed to prevent device failure
under the worst operation condition with both Thermal
Shutdown and Current Fold-back.
FEATURES
Very Low Dropout Voltage
Low Current Consumption: Typ. 30μA, Max. 35μA
High Accuracy Output Voltage: +/- 1.0%
Guaranteed 350mA Output
Thermal Shutdown
Current Limiting
Reverse battery protection
Compact Package: SOT-89 and SOT-223
Factory Pre-set Output Voltages
Low Temperature Coefficient
APPLICATIONS
Battery-powered devices
Personal communication devices
Home electric/electronic appliances
PC peripherals
TYPICAL APPLICATIONS
2006/08/03
Rev. 1.0
Champion Microelectronic Corporation
Page 1
CM2865(A)E5
350mA CMOS LDO
HIGH ACCURACY VOUT 1.0%
PIN CONFIGURATION
SOT-89
Top View
SOT-223
Top View
Pin 1
Pin 2
Pin 3
2865
GND
VIN
VOUT
Pin 1
Pin 2
Pin 3
2865 2865A
VIN
GND
GND VOUT
VOUT VIN
1
2
3
1
2
3
BLOCK DIAGRAM
+/-1%
2006/08/03
Rev. 1.0
Champion Microelectronic Corporation
Page 2
CM2865(A)E5
350mA CMOS LDO
HIGH ACCURACY VOUT 1.0%
ORDERING INFORMATION
Part Number
CM2865E5IM89
CM2865GE5IM89
CM2865E5IM223
CM2865GE5IM223
CM2865AE5IM223
CM2865AGE5IM223
Output Voltage
1.95V
1.95V
1.95V
1.95V
1.95V
1.95V
Temperature Range
-40℃ ~ +85℃
-40℃ ~ +85℃
-40℃ ~ +85℃
-40℃ ~ +85℃
-40℃ ~ +85℃
-40℃ ~ +85℃
Package
SOT-89
SOT-89
SOT-223
SOT-223
SOT-223
SOT-223
Note: For other pre-set output voltage, please contact Champion Sales office.
ABSOLUTE MAXIMUM RATINGS
Input Voltage
Output Current
Output Voltage
…………….……………………………. +7V
…………………….………………….
1A
OPERATING RATINGS
Ambient Temperature Range (T
A
) ……... -40℃ to +85℃
Junction Temperature Range
…..…... -40℃ to +125℃
…………………… GND-0.3V to V
IN
+0.3V
ESD Classification ………………………………………… B
THERMAL INFORMATION
Parameter
Thermal Resistance (Θ
jc
)
Thermal Resistance (Θ
ja
)
Internal Power Dissipation (P
D
)
(ΔT = 100℃, No Heatsink)
Maximum Junction Temperature
Maximum Lead Temperature (10 Sec)
SOT-89
SOT-223
SOT-89
SOT-223
SOT-89
SOT-223
Maximum
100
50
180
100
400
900
150
300
mW
℃/W
Unit
℃/W
℃
℃
Caution: Stress above the listed absolute rating may cause permanent damage to the device.
2006/08/03
Rev. 1.0
Champion Microelectronic Corporation
Page 3
CM2865(A)E5
350mA CMOS LDO
HIGH ACCURACY VOUT 1.0%
ELECTRICAL CHARACTERISTICS
T
A
= +25℃; V
IN
= V
IN(MIN)
unless otherwise noted
CM2865(A)E5
Parameter
Input Voltage
Output Voltage Accuracy
Symbol
V
IN
V
OUT
I
O
= 1mA
1.5V<V
O(NOM)
<=2.0V
Dropout Voltage
V
DROPOUT
I
O
= 350mA,
V
OUT
=V
O(NOM)
-1.5%,
2.0V<V
O(NOM)
<=2.8V
2.8V<V
O(NOM)
<3.8V
Output Current
Current Limit
Short Circuit Current
Quiescent Current
Ground Pin Current
Line Regulation
Load Regulation
Over Temperature Shutdown
Over Temperature Hystersis
V
OUT
Temperature Coefficient
I
O
I
LIM
I
SC
I
Q
I
GND
REG
LINE
REG
LOAD
OTS
OTH
TC
f=1kHz
Power Supply Rejection
PSRR
I
O
= 100mA
C
O
=2.2μF ceramic
f=10Hz to 100kHz
I
O
= 10mA, C
VBG
=0μF
Note 1.
V
IN(MIN)
= V
OUT
+ V
DROPOUT
Note 2.
As V
IN
is larger than V
IN(MIN)
, the Current Limit and output short current Spec value will increase
f=10kHz
f=100kHz
Output Voltage Noise
eN
C
O
=2.2μF
C
O
=100μF
V
OUT
> 1.2V
V
OUT
> 1.2V, V
IN
= V
IN(MIN)
V
OUT
< 0.8V
I
O
= 0mA
I
O
= 1mA to 350mA
I
OUT
=5mA, V
IN
=V
OUT
+1 to
V
OUT
+2
V
OUT
<= 2.0V
V
OUT
> 2.0V
0.02
0.2
175
30
30
50
20
15
30
μVrms
20
dB
350
350
1000
250
30
30
50
50
0.15
0.1
1
Test Conditions
Min.
Note 1
-1.0
Typ.
Max.
7
1.0
1000
800
660
mV
mA
mA
mA
μA
μA
%
%
%
℃
℃
ppm/℃
V
%
mV
Unit
I
O
=1mA to 350mA
2006/08/03
Rev. 1.0
Champion Microelectronic Corporation
Page 4
CM2865(A)E5
350mA CMOS LDO
HIGH ACCURACY VOUT 1.0%
DETAILED DESCRIPTION
The CM2865 family of CMOS regulators contain a PMOS pass transistor, voltage reference, error amplifier, over-current
protection and thermal shutdown.
The P-channel pass transistor receives data from the error amplifier, over-current shutdown, 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 175℃, or the current exceeds 350mA. During thermal
shutdown, the output voltage remains low. Normal operation is restored when the junction temperature drops below 120℃.
EXTERNAL CAPACITOR
The CM2865 is stable with an output capacitor to ground of 1.0μF or greater. It can keep stable even with higher or poor 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.
MARKING INFORMATION
65E5XX
Part Number
65 Add under line
Is Lead free
Output Voltage
Vout : 1.95V
If E5 add under line
is non-A.
Not under line is A
Make Year
To get year last
number .
EX : 2006=>6
2007=>7
Make Week
A~Z : 1~26 week
a~z : 27~52 week
2006/08/03
Rev. 1.0
Champion Microelectronic Corporation
Page 5
单片机
京公网安备 11010802033920号
Copyright © 2005-2026 EEWORLD.com.cn, Inc. All rights reserved
电子工程世界
