UM165XX
300mA, Micropower, VLDO Linear Regulator
UM165XX
SOT23-3
General Description
The UM165XX series are VLDO (very low dropout) linear regulators designed for low power
portable applications. Typical output noise is only 75μV
RMS
and maximum dropout is just 90mV at
the load current of 150mA.The internal P-channel MOSFET pass transistor requires no base
current, allowing the device to draw only 100μA during normal operation at the maximum load
current of 300mA.
Other features include high output voltage accuracy, excellent transient response, under voltage
lockout, stability with ultralow ESR ceramic capacitors as small as 1μF, reverse-battery protection,
short-circuit and thermal overload protection and output current limiting.
The UM165XX series are available in a low profile SOT23-3 package.
Applications
Bluetooth/802.11 Cards
PDAs and Notebook Computers
Portable Instruments and
Battery-Powered Systems
Cellular Phones
Features
Very Low Dropout: 90mV(max) at 150mA
Maximum Input Voltage: 6.0V
Low Noise:75μV
RMS
(10Hz to 100kHz)
±2%Voltage Accuracy at 150mA
Fast Transient Response
Under Voltage Lockout
Fixed Output Voltage:
3.3V/3.0V/2.8V/2.7V/2.5V/1.8V/1.5V/1.3V/
1.2V
Output Current Limit
Reverse-Battery Protection
No Protection Diodes Needed
Stable with 1μF Output Capacitor
Short-Circuit and Thermal Overload
Protection
Low Profile SOT23-3 Package
Pin Configurations
Top View
UM165XX
M: Monthly Code
SOT23-3
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UM165XX
Ordering Information
Part Number
UM165415
UM16535
UM16533
UM16530
UM16528
UM16527
UM16525
UM16518
UM16515
UM16513
UM16512
Output Voltage
4.15V
3.5V
3.3V
3.0V
2.8V
2.7V
2.5V
1.8V
1.5V
1.3V
1.2V
Packaging Type
Marking Code
53S
53Z
53U
53R
53Q
53P
53N
53K
53J
53E
53D
Shipping Qty
SOT23-3
3000pcs/7Inch
Tape & Reel
Pin Description
Pin Number
1
2
3
Symbol
GND
OUT
IN
Ground
Voltage Regulated Output
Power Supply
Function
Absolute Maximum Ratings (Note 1)
Symbol
V
IN
V
OUT
T
J
T
STG
T
L
Voltage on OUT Pin
Output Short-Circuit Duration
Operating Junction Temperature (Notes 2, 3)
Storage Temperature Range
Lead Temperature for Soldering 10 seconds
Parameter
Supply Voltage on IN Pin
Value
-7.5 to +7.5
-0.3 to +7.5
Indefinite
-40 to +125
-65 to +150
+300
°C
°C
°C
Unit
V
V
Note 1: Absolute Maximum Ratings are those values beyond which the life of a device may be
impaired.
Note 2: The UM165XX is tested and specified under pulse load conditions such that T
J
≈T
A
. The
device is guaranteed to meet performance specifications from 0℃ to 70℃. Specifications
over the – 40℃ to 125℃ operating junction temperature range are assured by design,
characterization and correlation with statistical process controls.
Note 3: This IC includes overtemperature protection that is intended to protect the device during
momentary overload conditions. Junction temperature will exceed 125
℃
when
overtemperature protection is active. Continuous operation above the specified maximum
operating junction temperature may impair device reliability.
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UM165XX
Electrical Characteristics
Symbol
V
IN
V
UVLO1
（Note1）
Parameter
Input Voltage Range
Input Under Voltage
Lockout
Input Under Voltage
Lockout
Operating Quiescent
Current
ESD Rating
Output Current
Test Conditions
Min
V
OUT
+
V
DROP
2.0
2.1
Typ
Max
6.0
2.6
2.3
Unit
V
V
V
μA
KV
mA
V
IN
falling
V
IN
falling
I
OUT
=0mA
I
OUT
=300mA
Human Body Mode
1mA≤I
OUT
≤150mA,
T
A
=+25℃
1mA≤I
OUT
≤150mA,
T
A
=-40℃ to +85℃
1mA≤I
OUT
≤300mA,
T
A
=-40℃ to +85℃
I
OUT
=150mA
V
IN
≥2.5V
V
IN
=4V, V
OUT
=5.5V
chip active
V
UVLO2
（Note2）
I
Q
90
100
2
300
-1
-2
-2.5
+1
+2
+2.5
90
450
0.01
160
20
1.5
I
OUT
%
Output Voltage
Accuracy
ΔV
DO
I
LIMT
Dropout Voltage
Output Current Limit
Input Reverse Leakage
Current (OUT to IN
Leakage Current)
Thermal-Shutdown
Temperature
Thermal-Shutdown
Hysteresis
Line Regulation
Load Regulation
Output Voltage Noise
mV
mA
μA
℃
℃
%/V
%
μV
RMS
dB
T
SHDN
ΔT
SHDN
V
OUT
+1V≤V
IN
≤V
OUT
+2V
I
OUT
=10mA
V
IN
=V
OUT
+1V
1mA≤I
OUT
≤150mA
10Hz to 100KHz
C
IN
=0.1μF, I
OUT
=10mA
F=100Hz
V
IN
=V
OUT
+1V
I
OUT
=100mA
0.09
0.2
75
70
65
50
40
PSRR
Power Supply Ripple
Rejection
F=1KHz
F=10KHz
F=100KHz
Note1:
V
UVLO1
is measured for devices with V
OUT
≥1.8V.
Note2:
V
UVLO2
is measured for devices with V
OUT
≤1.5V.
Note3:
ΔV
DO
just define for device with
V
OUT
≥2.5V.
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UM165XX
Pin Function
GND (Pin1):
Ground and Heat Sink. Solder to a ground plane or large pad to maximize heat
dissipation.
OUT (Pin 2):
Voltage Regulated Output. The OUT pin supplies power to the load. A minimum
output capacitor of 1μF is required to ensure stability. Larger output capacitors may be required for
applications with large transient loads to limit peak voltage transients. See the Applications
Information section for more information on output capacitance.
IN (Pin 3):
Power for UM165XX and Load. Power is supplied to the devices through the IN pin.
The IN pin should be locally bypassed to ground if the UM165XX series are more than a few
inches away from another source of bulk capacitance. In general, the output impedance of a battery
rises with frequency, so it is usually advisable to include an input bypass capacitor in
battery-powered circuits. A capacitor in the range of 0.1μF to 1μF is usually sufficient. The
UM165XX series are designed to withstand reverse voltages on the IN pin with respect to both
ground and the output pin. In the case of a reversed input, which can happen if a battery is plugged
in backwards, the UM165XX will act as if there is a large resistor in series with its input with only
a small amount of current flow.
Typical Application Circuit
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UM165XX
Typical Performance Characteristics
Quiescent Current vs Input Voltage
140
120
Quiescent Current(uA)
Dropout Voltage(V)
3.34
3.33
3.32
Outpout Voltage vs Output Current
100
80
60
40
20
0
2.5
3
3.5
4
4.5
5
5.5
6
Input Voltage(V)
3.31
3.30
3.29
3.28
3.27
3.26
3.25
0
1
50
100
150
200
250
300
Output Current(mA)
Dropout Voltage vs Output Current
120
100
Dropout Voltage(mV)
80
60
40
20
0
0
25
50
75 100 125 150 175 200 225 250 275 300
Output Current(mA)
Outpout Voltage vs Output Current
3.34
3.33
3.32
Dropout Voltage(V)
3.31
3.30
3.29
3.28
3.27
3.26
3.25
0
1
50
100
150
200
250
300
Output Current(mA)
Line Transient Response
Load Transient Response
V
IN
=3.5V to 4.5V (2.0V/div)
I
OUT
=30mA to 200mA (200mA/div)
V
OUT
(100mV/div)
UM16533S
I
LOAD
=100mA,100us/div
V
OUT
(20mV/div)
UM16533S
VIN=4.3V,100us/div
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