MST56XXB
60V/150mA/2uA IQ/Fast Transient
High PSRR Linear Voltage Regulator
Milestone Semiconductor Inc.
Description
Features
The MST56XXB series is a high input voltage (60V),
Low Quiescent Current：2uA
low quiescent current, High PSRR linear regulator
High Input Voltage Rating：Up to 80V
(LDO) able to provide 150mA load current.
Output Current：150mA
The LDO features very fast response against line
High PSRR：70dB at 1Khz
voltage transient and load current transient, and
Dropout Voltage：
ensures no overshoot voltage during the LDO start
70mV@10mA
up and short circuit recovery.
700mV@100mA
The device features integrated short-circuit and
thermal shutdown protection.
Fixed Output Voltages：
3.0V, 3.3V, 3.6V and 5.0V
The device is available with fixed output voltages
High-accuracy Output Voltage: ±2%
of 3.0V, 3.3V, 3.6V and 5.0V, and available in
Good Transient Response
SOT23 and SOT89 packages.
Integrated Short-Circuit Protection
Integrated Thermal Protection
Available Packages：
Application
Battery-powered equipment
Smoke detector and sensor
Micro controller Applications
Home Appliance
Application Circuits
MST
MST56XXBTE
MST56XXBTE-A
MST56XXBTE-B
MST56XXBTE-C
MST56XXBTS
MST56XXBTS-A
MST56XXBTS-B
MST56XXBTS-C
MST56XXBTG
www.mst-ic.com
SOT23-3
SOT89-3
SOT23-5
-1-
MST56XXB
Milestone Semiconductor Inc.
Packages And Pin Assignment
60V/150mA/2uA IQ/Fast Transient
High PSRR Linear Voltage Regulator
Pin Descriptions
MST56XXBTE
1
2
3
MST56XXBTS
1
3
2
MST
SOT23-3
MST56XXBTE-A
2
1
3
SOT89-3
MST56XXBTS-A
3
1
2
MST56XXBTE-B
3
2
1
MST56XXBTS-B
SOT23-5
MST56XXBTG
1
2
3
4
5
2
3
1
MST56XXBTE-C
PIN
NAME
MST56XXBTS-C
PIN
DESCRIPTION
NAME
www.mst-ic.com
3
1
2
2
1
3
GND
VOUT
VIN
GND
VOUT
VIN
PIN
NAME
VIN
GND
NC
NC
VOUT
DESCRIPTION
Ground Pin
Output Pin
Input Pin
Ground Pin
Output Pin
Input Pin
DESCRIPTION
Input Pin
Ground Pin
No Connection
No Connection
Output Pin
-2-
MST56XXB
Milestone Semiconductor Inc.
Functional Block Diagram
60V/150mA/2uA IQ/Fast Transient
High PSRR Linear Voltage Regulator
Absolute Maximum Ratings
Item
Voltage
Current
Temperature
Thermal Resistance
(Junction to Ambient)
Power Dissipation
Electrostatic
discharge rating
MST
Description
Min
Max
Unit
VIN to GND
-0.3
80
V
VOUT to GND
VOUT to VIN
Peak output current
Operating Ambient Temperature
Storage Temperature
Operating virtual junction
Temperature
SOT89
-0.3
-35
-40
-40
-
SOT23
SOT89
SOT23
Human Body Model（HBM）
Charged Device Model（MM）
www.mst-ic.com
6
0.3
Internally limited
380
6
100
600
300
V
85
℃
150
℃
150
180
V
℃
℃/W
℃/W
mW
mW
kV
V
-3-
MST56XXB
Milestone Semiconductor Inc.
Electrical Characteristics
60V/150mA/2uA IQ/Fast Transient
High PSRR Linear Voltage Regulator
（At TA=25°C, CIN=1uF, VIN=VOUTNOM+1.0V, COUT=10uF, unless otherwise noted）
Symbol
VIN
Parameter
Input Voltage
IGND
Quiescent Current
IOUT_MAX
Output Current
VOUT
Output Voltage
VDROP
Dropout Voltage(1)
ΔVOUT(ΔIOUT)
Load Regulation
ILIMIT
Current Limit
ΔVOUT(ΔVIN)
TSHDN
PSRR
Line Regulation
Test Conditions
VIN=12V, No load
VIN=12V, IOUT=10mA
IOUT=10mA ,
VIN=VOUTNOM-0.1V
IOUT=100mA ,
VIN=VOUTNOM-0.1V
VIN=12V,
1mA≤IOUT≤100mA
IOUT=1mA,
VOUTNOM+0.5V≤VIN≤60V
Shutdown, temperature
increasing
Thermal Shutdown
Temperature
Reset, temperature
decreasing
Vin=12V , Iout=10mA
F=1Khz,Vout=3.3V
MIN
5
—
VOUTNOM
* 0.98
—
—
—
TYP
MAX
UNIT
VOUTNOM
VOUTNOM
* 1.02
V
70
—
—
2
150
700
—
0.02
—
250
—
—
—
—
0.01
150
140
70
60
—
V
uA
—
mA
—
mV
mV
—
%/mA
—
mA
—
—
—
—
%/V
℃
dB
Note：(1) Dropout Voltage is the voltage difference between the input and the output at which the
output voltage drops 2% below its nominal value.
MST
www.mst-ic.com
-4-
MST56XXB
Milestone Semiconductor Inc.
60V/150mA/2uA IQ/Fast Transient
High PSRR Linear Voltage Regulator
Typical Performance Characteristics
Test Condition: TA=25°C,Vin=12V, IOUT=1mA, COUT=10uF, unless otherwise noted
Frequency(Hz)
Input Voltage(V)
MST
www.mst-ic.com
-5-
MST56XXB
60V/150mA/2uA IQ/Fast Transient
High PSRR Linear Voltage Regulator
Milestone Semiconductor Inc.
Line Transient Response
Line Transient Response
3.3V
VOUT
3.3V
24V
VIN
24V
0V
VOUT
0V
5V
5V
VIN=5 to24V
VOUT=3.3V
0V
VIN
VIN=24 to5V
VOUT=3.3V
0V
Time(10us/div)
Time(4us/div)
Load Transient Response
Load Transient Response
90mA
IOUT 90mA
0mA
0mA
180mV
0V
VOUT
0V
VIN
5V
IOUT
VOUT
-220mV
5V
VIN=5V
VOUT=0V
IOUT=0mA to90mA
0V
VIN=5V
VOUT=0V
IOUT=90mA to 0mA
0V
Time(20us /div)
VIN
Time(200us/div)
Start Up
Start Up
3.3V
VOUT 100mA
IOUT
VOUT
3.3V
0mA
0V
24V
VIN
0V
24V
VIN
VIN=24V
VIN=24V
VOUT=3.3V
0V
Time(100us/div)
Time(100us/div)
Short Circuit Protection
Short Circuit Protection
3.3V
3.3V
0V
VOUT
0V
80mA
IOUT
80mA
0mA
VIN
VIN=5V
VOUT=3.3V to short
IOUT
5V
0V
Time(10ms/div)
MST
VOUT
0mA
5V
0V
VIN=24V
VOUT=3.3V
VOUT=3.3V
IOUT=100mA
IOUT=100mA
0V
VIN
VIN=5V
VOUT=short to3.3V
Time(10ms/div)
www.mst-ic.com
-6-
MST56XXB
Milestone Semiconductor Inc.
Functional Description
60V/150mA/2uA IQ/Fast Transient
High PSRR Linear Voltage Regulator
Input Capacitor
A 1μF ceramic capacitor is recommended to connect between VIN and GND pins to decouple input
power supply glitch and noise. The amount of the capacitance may be increased without limit. This
input capacitor must be located as close as possible to the device to assure input stability and less
noise. For PCB layout, a wide copper trace is required for both VIN and GND.
Output Capacitor
An output capacitor is required for the stability of the LDO. The recommended minimum output
capacitance is 1μF, ceramic capacitor is recommended, and temperature characteristics are X7R or
X5R. Higher capacitance values help to improve load/line transient response. The output capacitance
may be increased to keep low undershoot/overshoot. Place output capacitor as close as possible to
VOUT and GND pins.
Current Limit and Short Circuit Protection
When output current at VOUT pin is higher than current limit threshold or the VOUT pin is direct
short to GND, the current limit protection will be triggered and clamp the output current at a
pre-designed level to prevent over-current and thermal damage.
Thermal Protection
The MST56XXB has internal thermal sense and protection circuits. When excessive power dissipation
happens on the device, such as short circuit at the output pin or very heavy load current with a large
voltage drop across the device, the internal thermal protection circuit will be triggered, and it will
shut down the power MOSFET to prevent the LDO from damage. As soon as excessive thermal
condition is removed and the temperature of the device drops down, the thermal protection circuit
will lease the control of the power MOSFET, and the LDO device goes to normal operation.
MST
www.mst-ic.com
-7-
MST56XXB
Milestone Semiconductor Inc.
60V/150mA/2uA IQ/Fast Transient
High PSRR Linear Voltage Regulator
Ordering And Marking Information
Package Outline Dimensions
SOT23-3
MST
www.mst-ic.com
-8-
MST56XXB
Milestone Semiconductor Inc.
SOT89-3
60V/150mA/2uA IQ/Fast Transient
High PSRR Linear Voltage Regulator
SOT23-5
MST
www.mst-ic.com
-9-
MST56XXB
60V/150mA/2uA IQ/Fast Transient
High PSRR Linear Voltage Regulator
Milestone Semiconductor Inc.
Packing Information
W
P
D
Type
W(mm)
P(mm)
D(mm)
Qty (pcs)
SOT23-3
8.0±0.1 mm
4.0±0.1 mm
180±1 mm
3000pcs
SOT23-5
8.0±0.1 mm
4.0±0.1 mm
180±1 mm
3000pcs
SOT89-3
12.0±0.1 mm
4.0±0.1 mm
180±1 mm
1000pcs
MST
www.mst-ic.com
- 10 -
MST56XXB
Milestone Semiconductor Inc.
60V/150mA/2uA IQ/Fast Transient
High PSRR Linear Voltage Regulator
IMPORTANT NOTICE
MST INCORPORATED MAKES NO WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, WITH REGARDS
TO THIS DOCUMENT, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE (AND THEIR EQUIVALENTS
UNDER THE LAWS OF ANY JURISDICTION).
MST Incorporated and its subsidiaries reserve the right to make modifications, enhancements,
improvements, corrections or other changes without further notice to this document and any
product described herein. MST Incorporated does not assume any liability arising out of the
application or use of this document or any product described herein; neither does MST Incorporated
convey any license under its patent or trademark rights, nor the rights of others. Any Customer or
user of this document or products described herein in such applications shall assume all risks of
such use and will agree to hold MST Incorporated and all the companies whose products are
represented on MST Incorporated website, harmless against all damages.
MST Incorporated does not warrant or accept any liability whatsoever in respect of any products
purchased through unauthorized sales channel. Should Customers purchase or use MST
Incorporated products for any unintended or unauthorized application, Customers shall indemnify
and hold MST Incorporated and its representatives harmless against all claims, damages, expenses,
and attorney fees arising out of, directly or indirectly, any claim of personal injury or death
associated with such unintended or unauthorized application.
Products described herein may be covered by one or more United States, international or foreign
patents pending. Product names and markings noted herein may also be covered by one or more
United States, international or foreign trademarks.
MST
www.mst-ic.com
- 11 -
