UM1650 UM1750
350mA, Micropower, Very Low Dropout Linear Regulator
UM1650S-xx SOT23-3
UM1750S-xx SOT23-5
UM1750Y-xx SOT89-5
UM1750DA-xx DFN6 2.0×
2.0
General Description
The UM1650/UM1750 series are very low dropout linear regulators designed for low power
portable applications. Typical output noise is only 195μV
RMS
and maximum dropout is just
110mV(Typ) at the load current of 150mA.The internal P-channel MOSFET pass transistor
requires no base current, allowing the device to draw only 190μA during normal operation at the
maximum load current of 350mA.With a shutdown control pin, the UM1750 consumes less than
1μA current in shutdown mode.
Other features include high output voltage accuracy, excellent transient response, under voltage
lockout, stability with ultralow ESR ceramic capacitors as small as 1μF, short-circuit and thermal
overload protection and output current limiting.
The UM1650 series are available in a low profile SOT23-3 package. The UM1750 series are
available in low profile SOT23-5, SOT89-5 and DFN6 2.0× packages.
2.0
Applications
Bluetooth/802.11 Cards
PDAs and Notebook Computers
Portable Instruments and
Battery-Powered Systems
Cellular Phones
Features
Very Low Dropout: 150mV(max) at 150mA
Maximum Input Voltage: 6.0V
± Voltage Accuracy at
V
OUT
>1.5V
2%
±
30mV Voltage Accuracy at
V
OUT
≤1.5V
Fast Transient Response
Under Voltage Lockout
Fixed Output Voltage of UM1650S-xx and
UM1750S/Y/DA-xx from 1.0V to 4.0V with
0.1V Interval
Adjustable Output Voltage of
UM1750S/Y/DA-00 from 1.0V to 5.0V
Output Current Limit
Stable with 1μF Output Capacitor
Short-Circuit and Thermal Overload
Protection
Low Profile SOT23-3, SOT23-5, SOT89-5
and DFN6 2.0× Packages
2.0
________________________________________________________________________
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UM1650 UM1750
Pin Configurations
Top View
3
6XX
3 IN
Marking Pin 1
OUT 2
1
M: Month Code
UM1650S-xx
SOT23-3
5
4
5XX
GND 2
SHDN 3
4 NC
1
2
M: Month Code
UM1750S-xx
SOT23-5
5
4
5CT
GND 2
SHDN 3
4 FB
1
2
M: Month Code
UM1750S-00
SOT23-5
5
4
NC 1
5 OUT
1750-XX
XX
1
2
3
GND 2
GND
SHDN 3
4
IN
XX: Week Code
UM1750Y-xx
SOT89-5
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M
3
IN 1
5 OUT
M
3
IN 1
5 OUT
M
2
GND 1
UM1650 UM1750
Pin Configurations (Continued)
Top View
5
4
FB
1
5 OUT
GND 2
GND
1750-00
XX
1
2
3
SHDN 3
4
IN
XX: Week Code
UM1750Y-00
SOT89-5
(Top View)
BXX
Marking PIN1
GND
IN
NC
OUT
M: Month Code
UM1750DA-xx
DFN6 2.0×
2.0
(Top View)
BFJ
Marking PIN1
GND
IN
NC
OUT
M: Month Code
UM1750DA-00
DFN6 2.0×
2.0
Pin Description
UM1650S-xx
Pin Number
3
1
-
-
2
-
UM1750S-xx
(Fixed V
OUT
)
Pin Number
1
2
3
4
5
-
UM1750S-00
(Adjustable V
OUT
)
Pin Number
1
2
3
-
5
4
Symbol
IN
GND
___________
Function
Power Supply
Ground
Shutdown Input: High=Active
LDO, Low=Shutdown LDO
Not Connected
Voltage Regulated Output
Output Voltage Feedback
SHDN
NC
OUT
FB
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M
SHDN
1
FB
M
SHDN
1
NC
UM1650 UM1750
Pin Description (Continued)
UM1750Y-xx
(Fixed V
OUT
)
Pin Number
4
2
UM1750Y-00
UM1750DA-00
UM1750DA-xx
(Adjustable
(Adjustable
(Fixed V
OUT
)
Symbol
Function
V
OUT
)
V
OUT
)
Pin Number
Pin Number
Pin Number
4
3
3
IN
Power Supply
2
2
2
GND
___________
3
3
1
1
SHDN
1
5
-
-
5
1
5,6
4
-
5
4
6
NC
OUT
FB
Ground
Shutdown Input:
High=Active
LDO,
Low=Shutdown
LDO
Not Connected
Voltage
Regulated
Output
Output Voltage
Feedback
Naming Information
UM1650/1750
-
00: Adjustable Output Voltage
Fixed Output Voltage
10: 1.0V
11: 1.1V
12: 1.2V
……
40: 4.0V
Package Type
S: SOT23-3(UM1650)
SOT23-5(UM1750)
Y: SOT89-5
DA: DFN6 2.0×2.0
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UM1650 UM1750
Ordering Information
Part Number
UM1650S-10
UM1650S-11
UM1650S-12
UM1650S-13
UM1650S-14
UM1650S-15
UM1650S-16
UM1650S-17
UM1650S-18
UM1650S-19
UM1650S-20
UM1650S-21
UM1650S-22
UM1650S-23
UM1650S-24
UM1650S-25
UM1650S-26
UM1650S-27
UM1650S-28
UM1650S-29
UM1650S-30
UM1650S-31
UM1650S-32
UM1650S-33
UM1650S-34
UM1650S-35
UM1650S-36
UM1650S-37
UM1650S-38
UM1650S-39
UM1650S-40
Output Voltage
1.0V
1.1V
1.2V
1.3V
1.4V
1.5V
1.6V
1.7V
1.8V
1.9V
2.0V
2.1V
2.2V
2.3V
2.4V
2.5V
2.6V
2.7V
2.8V
2.9V
3.0V
3.1V
3.2V
3.3V
3.4V
3.5V
3.6V
3.7V
3.8V
3.9V
4.0V
Packaging Type
Marking Code
6AA
6AB
6A2
6A3
6A4
6A5
6A6
6A7
6A8
6A9
6BA
6BB
6B2
6B3
6B4
6B5
6B6
6B7
6B8
6B9
6CA
6CB
6C2
6C3
6C4
6C5
6C6
6C7
6C8
6C9
6CC
Shipping Qty
SOT23-3
3000pcs/7Inch
Tape & Reel
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