MC33275 Datasheet, PDF (1/12 Pages) ON Semiconductor – LOW DROPOUT MICROPOWER VOLTAGE REGULATOR

MC33275
Low Dropout 300 mA
Voltage Regulator
The MC33275 series are micropower low dropout voltage
regulators available in a wide variety of output voltages as well as
packages, DPAK, SOT–223, and SOP–8 surface mount packages.
These devices feature a very low quiescent current and are capable of
supplying output currents up to 300 mA. Internal current and thermal
limiting protection are provided by the presence of a short circuit at the
output and an internal thermal shutdown circuit.
The MC33275 is available as a MC33375 which includes an On/Off
control.
Due to the low input–to–output voltage differential and bias current
specifications, these devices are ideally suited for battery powered
computer, consumer, and industrial equipment where an extension of
useful battery life is desirable.
Features:
• Low Quiescent Current (125 mA)
• Low Input–to–Output Voltage Differential of 25 mV at I_O = 10 mA,
and 260 mV at I_O = 300 mA
• Extremely Tight Line and Load Regulation
• Stable with Output Capacitance of only 0.33 mF for 2.5 V Output
Voltage
• Internal Current and Thermal Limiting
Simplified Block Diagram
V_in
V_out
Thermal &
Anti–sat
Protection
Rint
1.23 V
V. Ref.
54 K
Gnd
This device contains 41 active transistors
http://onsemi.com
LOW DROPOUT
MICROPOWER VOLTAGE
REGULATOR
1
3
Gnd
4
4
MC33275
1
2
3
V_in ^Gnd V_out
PLASTIC
DT SUFFIX
CASE 369A
Gnd
4
4
1
3
MC33375
1
2
3
V_in Gnd V_out
PLASTIC
ST SUFFIX
CASE 318E
8
1
1
Input
2
Gnd
3
Gnd
4
Gnd
8
Output
7
Gnd
MC33375 ⁶
Gnd
5
N/C
Pins 4 and 5 Not Connected
PLASTIC
D SUFFIX
CASE 751
ORDERING INFORMATION
See detailed ordering and shipping information in the
package dimensions section on page 9 of this data sheet.
© Semiconductor Components Industries, LLC, 2000
1
March, 2000 – Rev. 4
Publication Order Number:
MC33275/D