VER A01
SR78XXMM
Document:S05SA0006
- 1 -
WWW.SALLTECH.COM
IDM Enterprise Specialized in Power Semiconductors
Features
Low voltage drop: 0.23V@100mA
High input voltage: 15V
Low temperature coefficient
Large Output Current: >0.5A
Low Quiescent Current: 2.0uA
Output voltage accuracy: tolerance ±2%
Built-in current limiter
SOT-23-3L package
Applications
Battery-powered equipment
Hand-Hold Equipment
GRS Receivers
Wireless LAN
General Description
The SR78XXMM series is a group of positive voltage output, three-pin regulators, it provide a high current even
when the input/output voltage differential is small. Low power consumption and high accuracy is achieved through CMOS
and laser trimming technologies.
The SR78XXMM consists of a high-precision voltage reference, an error amplification circuit, and a current limited
output driver. Load Transient response has improved in comparison to the existing series. SOT23-3 packages are
available.
Block Diagram&Application Circuits
Note：
1.Cin=Cout=10uF. (10uF Electrolytic capacitor is recommended).
2.Re= (1.2~1.8)Ω
.
3. If the input and output capacitors are ceramic, add a resistor at the
input.
4.The CE port is recommended to connect the current limiting resistor Re. The recommended
resistance is 10K~47K. When the input voltage is larger than or equal to 12V, it is recommended to add a 0.01uF capacitor C
SR78XXMM
VER A01
Document:S05SA0006
- 2 -
WWW.SALLTECH.COM
IDM Enterprise Specialized in Power Semiconductors
SOT-23-3L (Top View)
Selection Table
Marking&Pin Assignment
Series.PN
PN
Symbol Description
Part No
①: Vout
②: M
③: PKG
④: R/G
SR78XXMM
SR78-①②③④
SR7818Mxx
1.8V
Standard
M: SOT-23-3L
R: RoHS / Pb
Free
G: Halogen Fre
SR7828Mxx
2.8V
SR7830Mxx
3.0V
SR7833Mxx
3.3V
SR7836Mxx
3.6V
SR7840Mxx
4.0V
SR7845Mxx
4.5V
SR7850Mxx
5.0V
SOT-23-3L
Marking
Symbol
explanation
①②③④
①
Fixed :S
②
Output Voltage:
A=1.2V~3.5V,B=3.6V~5V
③
Output Voltage:
(A~Z)=(1.2V~3.5V),(A~O)=(3.6V~5V)
④
Fixed :B
PIN NO
PIN NAME
FUNCTION
1
GND
GND pin
2
VIN
Input voltage
Pin
3
VOUT
Output voltage
pin