Document
CM2865(A)E5
350mA CMOS LDO HIGH ACCURACY VOUT 1.0%
GENERAL DESCRIPTION
FEATURES
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.
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
Downloaded from Elcodis.com electronic components distributor
Page 1
PIN CONFIGURATION
SOT-89 Top View
Pin 1 Pin 2 Pin 3
2865 GND VIN VOUT
12 3
BLOCK DIAGRAM
CM2865(A)E5
350mA CMOS LDO HIGH ACCURACY VOUT 1.0%
SOT-223 Top View
Pin 1 Pin 2 Pin 3
2865 2865A VIN GND GND VOUT VOUT VIN
12 3
+/-1%
2006/08/03 Rev. 1.0
Champion Microelectronic Corporation
Downloaded from Elcodis.com electronic components distributor
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℃
Note: For other pre-set output voltage, please contact Champion Sales office.
Package SOT-89 SOT-89 SOT-223 SOT-223 SOT-223 SOT-223
ABSOLUTE MAXIMUM RATINGS
Input Voltage …………….……………………………. +7V Output Current …………………….…………………. 1A Output Voltage …………………… GND-0.3V to VIN+0.3V ESD Classification ………………………………………… B
OPERATING RATINGS
Ambient Temperature Range (TA) ……... -40℃ to +85℃ Junction Temperature Range …..…... -40℃ to +125℃
THERMAL INFORMATION
Parameter Thermal Resistance (Θjc)
Thermal Resistance (Θja)
Internal Power Dissipation (PD) (ΔT = 100℃, No Heatsink)
SOT-89 SOT-223 SOT-89 SOT-223 SOT-89 SOT-223
Maximum 100 50 180 100 400 900
Maximum Junction Temperature Maximum Lead Temperature (10 Sec)
150 300
Caution: Stress above the listed absolute rating may cause permanent damage to the device.
Unit ℃/W ℃/W mW
℃ ℃
2006/08/03 Rev. 1.0
Champion Microelectronic Corporation
Downloaded from Elcodis.com electronic components distributor
Page 3
CM2865(A)E5
350mA CMOS LDO HIGH ACCURACY VOUT 1.0%
ELECTRICAL CHARACTERISTICS
TA = +25℃; VIN = VIN(MIN) unless otherwise noted
Parameter
Input Voltage Output Voltage Accuracy
Dropout Voltage
Output Current Current Limit Short Circuit Current Quiescent Current Ground Pin Current
Line Regulation
Load Regulation Over Temperature Shutdown Over Temperature Hystersis
Symbol
Test Conditions
CM2865(A)E5 Min. Typ. Max.
VIN VOUT
IO = 1mA
Note 1 -1.0
7 1.0
VDROPOUT
IO = 350mA, VOUT=VO(NOM)-1.5%,
1.5V 1.2V
350
ILIM
VOUT > 1.2V, VIN = VIN(MIN)
350 1000
ISC VOUT < 0.8V
250
IQ IO = 0mA
IGND IO = 1mA to 350mA
REGLINE
IOUT=5mA, VIN=VOUT+1 to VOUT+2
VOUT <= 2.0V VOUT > 2.0V
REGLOAD
IO=1mA to 350mA
OTS
30 30
0.02 0.2 175
50 50 0.15 0.1 1
OTH
30
Unit
V %
mV
mV mA mA mA μA μA % % % ℃ ℃
VOUT Temperature Coefficient
TC
Power Supply Rejection
PSRR
IO = 100mA CO=2.2μF ceramic
f=1kHz f=10kHz f=100kHz
30 ppm/℃ 50 20 dB 15
Output Voltage Noise
f=10Hz to 100kHz
CO=2.2μF
eN
IO = 10mA, CVBG=0μF
CO=100μF
30 μVrms
20
Note 1. VIN(MIN) = VOUT + VDROPOUT Note 2. As VIN is larger than VIN(MIN), the Current Limit and output short current Spec value will increase
2006/08/03 Rev. 1.0
Champion Microelectronic Corporation
Downloaded from Elcodis.com electronic components distributor
Page 4
DETAILED DESCRIPTION
CM2865(A)E5
350mA CMOS LDO HIGH ACCURACY VOUT 1.0%
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 junctio.