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 195μVRMS 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 2.0×2.0 packages.
Applications
Features
z
z
z
z
z
z
z
Bluetooth/802.11 Cards
PDAs and Notebook Computers
Portable Instruments and
Battery-Powered Systems
Cellular Phones
z
z
z
z
z
z
z
z
Very Low Dropout: 150mV (Max) at 150mA
Maximum Input Voltage: 6.0V
±2% Voltage Accuracy at VOUT>1.5V
±30mV Voltage Accuracy at VOUT≤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 2.0×2.0 Packages
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UM1650 UM1750
Pin Configurations
Top View
3
GND 1
6XX
3 IN
Marking Pin 1
OUT 2
1
2
M
M: Month Code
UM1650S-xx
SOT23-3
M
M: Month Code
UM1750S-xx
SOT23-5
M: Month Code
UM1750S-00
SOT23-5
XX: Week Code
UM1750Y-xx
SOT89-5
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UM1650 UM1750
Pin Configurations (Continued)
Top View
XX: Week Code
UM1750Y-00
SOT89-5
(Top View)
M: Month Code
UM1750DA-xx
DFN6 2.0×2.0
(Top View)
M: Month Code
UM1750DA-00
DFN6 2.0×2.0
* The tab on the bottom of the package enhances thermal performance and is electrically
connected to GND (substrate level). It is recommended that the tab be connected to the ground
plane on the board. If not, the tab can be left open.
Pin Description
UM1650S-xx
3
1
Pin Number
UM1750S-xx
UM1750S-00
(Fixed VOUT) (Adjustable VOUT)
1
1
2
2
Symbol
IN
GND
___________
-
3
3
SHDN
2
-
4
5
-
5
4
NC
OUT
FB
Function
Power Supply
Ground
Shutdown Input:
High=Activate LDO,
Low=Shutdown LDO
Not Connected
Voltage Regulated Output
Output Voltage Feedback
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UM1650 UM1750
Pin Description (Continued)
Pin Number
UM1750Y-00
UM1750DA-00 Symbol
Function
UM1750DA-xx
UM1750Y-xx
(Adjustable
(Adjustable
(Fixed VOUT)
(Fixed VOUT)
VOUT)
VOUT)
4
4
3
3
IN
Power Supply
2
2
2
2
GND
Ground
Shutdown Input:
High=Activate
___________
3
3
1
1
SHDN LDO,
Low=Shutdown
LDO
1
5,6
5
NC
Not Connected
Voltage
5
5
4
4
OUT
Regulated
Output
Output Voltage
1
6
FB
Feedback
Naming Information
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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
SOT23-3
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
3000pcs/7Inch
Tape & Reel
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UM1650 UM1750
Ordering Information (Continued)
Part Number
UM1750S-00
UM1750S-10
UM1750S-11
UM1750S-12
UM1750S-13
UM1750S-14
UM1750S-15
UM1750S-16
UM1750S-17
UM1750S-18
UM1750S-19
UM1750S-20
UM1750S-21
UM1750S-22
UM1750S-23
UM1750S-24
UM1750S-25
UM1750S-26
UM1750S-27
UM1750S-28
UM1750S-29
UM1750S-30
UM1750S-31
UM1750S-32
UM1750S-33
UM1750S-34
UM1750S-35
UM1750S-36
UM1750S-37
UM1750S-38
UM1750S-39
UM1750S-40
Output Voltage
ADJ
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
SOT23-5
Marking Code
5CT
5JA
5JB
5J2
5J3
5J4
5J5
5J6
5J7
5J8
5J9
5NA
5NB
5N2
5N3
5N4
5N5
5N6
5N7
5N8
5N9
5PA
5PB
5HP
5CU
5P4
5P5
5P6
5P7
5P8
5P9
5PC
Shipping Qty
3000pcs/7Inch
Tape & Reel
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UM1650 UM1750
Ordering Information (Continued)
Part Number
UM1750Y-00
UM1750Y-10
UM1750Y-11
UM1750Y-12
UM1750Y-13
UM1750Y-14
UM1750Y-15
UM1750Y-16
UM1750Y-17
UM1750Y-18
UM1750Y-19
UM1750Y-20
UM1750Y-21
UM1750Y-22
UM1750Y-23
UM1750Y-24
UM1750Y-25
UM1750Y-26
UM1750Y-27
UM1750Y-28
UM1750Y-29
UM1750Y-30
UM1750Y-31
UM1750Y-32
UM1750Y-33
UM1750Y-34
UM1750Y-35
UM1750Y-36
UM1750Y-37
UM1750Y-38
UM1750Y-39
UM1750Y-40
Output Voltage
ADJ
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
SOT89-5
Marking Code
1750-00
1750-10
1750-11
1750-12
1750-13
1750-14
1750-15
1750-16
1750-17
1750-18
1750-19
1750-20
1750-21
1750-22
1750-23
1750-24
1750-25
1750-26
1750-27
1750-28
1750-29
1750-30
1750-31
1750-32
1750-33
1750-34
1750-35
1750-36
1750-37
1750-38
1750-39
1750-40
Shipping Qty
1000pcs/7Inch
Tape & Reel
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UM1650 UM1750
Ordering Information (Continued)
Part Number
UM1750DA-00
UM1750DA-10
UM1750DA-11
UM1750DA-12
UM1750DA-13
UM1750DA-14
UM1750DA-15
UM1750DA-16
UM1750DA-17
UM1750DA-18
UM1750DA-19
UM1750DA-20
UM1750DA-21
UM1750DA-22
UM1750DA-23
UM1750DA-24
UM1750DA-25
UM1750DA-26
UM1750DA-27
UM1750DA-28
UM1750DA-29
UM1750DA-30
UM1750DA-31
UM1750DA-32
UM1750DA-33
UM1750DA-34
UM1750DA-35
UM1750DA-36
UM1750DA-37
UM1750DA-38
UM1750DA-39
UM1750DA-40
Output Voltage
ADJ
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
DFN6 2.0×2.0
Marking Code
BFJ
BFE
BFF
BH2
BH3
BH4
BH5
BH6
BH7
BH8
BH9
BHA
BHB
BJ2
BJ3
BJ4
BJ5
BJ6
BJ7
BJ8
BJ9
BJA
BJB
BK2
BK3
BK4
BK5
BK6
BK7
BK8
BK9
BKA
Shipping Qty
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Tape & Reel
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UM1650 UM1750
Absolute Maximum Ratings (Note 1)
Symbol
VIN
Parameter
Supply Voltage on IN Pin
___________
Value
Unit
-0.3 to +7.5
V
VSHDN
VFB
Voltage on SHDN Pin
Voltage on FB Pin
-0.3 to +7.5
V
-0.3 to +7.5
V
VOUT
Voltage on OUT Pin
-0.3 to +7.5
V
___________
Output Short-Circuit Duration
θJA
Indefinite
SOT23-3
+225
Junction Thermal Resistance SOT23-5
(Note 2)
SOT89-5
+215
DFN6 2.0×2.0
TJ
TSTG
TL
+66
°C/W
+110
Operating Junction Temperature (Note 3, 4)
-40 to +125
°C
Storage Temperature Range
-65 to +150
°C
+300
°C
Lead Temperature for Soldering 10 Seconds
Note 1: Absolute Maximum Ratings are those values beyond which the life of a device may be
impaired.
Note 2: The maximum allowable power dissipation of any TA (ambient temperature) is PD(max)=
(TJ(max)–TA)/θJA. Exceeding the maximum allowable power dissipation will result in
excessive die temperature, and the regulator will go into thermal shutdown.
Note 3: The UM1650/UM1750 is tested and specified under pulse load conditions such that TJ≈TA.
Specifications over the -40°C to 125°C operating junction temperature range are assured
by design, characterization and correlation with statistical process controls.
Note 4: This IC includes overtemperature protection that is intended to protect the device during
momentary overload conditions. Junction temperature will exceed 125°C when
overtemperature protection is active. Continuous operation above the specified maximum
operating junction temperature may impair device reliability.
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UM1650 UM1750
Electrical Characteristics
____________
VSHDN=VIN=VOUT+1V, CIN=COUT=1.0μF, TA=25°C, unless noted.
Symbol
VIN
VUVLO
IQ
___________
ISHDN
IOUT
VFB
Parameter
Input Voltage Range
Input Under Voltage
Lockout
Test Conditions
Min
2.5
VIN Falling
1.8
Operating Quiescent
Current
VIN=4.3V, IOUT=0mA
90
130
VIN=4.3V, IOUT=350mA
190
300
Shutdown Leakage Current
Output Current
Feedback Reference
Voltage
Output Voltage Accuracy
VIN=2.5V to 6.0V
0mA≤IOUT≤350mA
VIH
SHDN Input High Voltage
___________
ΔTSHDN
SHDN Input Current
Thermal-Shutdown
Temperature
Thermal-Shutdown
Hysteresis
Line Regulation
Load Regulation
Output Voltage Noise
PSRR
Power Supply Ripple
Rejection
μA
mA
1.00
1.02
V
%
VOUT≤1.5V
-30
+30
mV
150
mV
VIN≥2.5V
SHDN Input Low Voltage
0.98
μA
+2
RL=68Ω, COUT=1μF
___________
V
-2
Output Current Limit
VIL
2.4
VOUT>1.5V
Startup Time Response
___________
Unit
V
350
t
Dropout Voltage
Max
6.0
1
ΔVDO
(Note 5)
ILIMIT
TSHDN
Typ
IOUT=150mA
110
550
mA
44
VIN=6.0V
VIN=6.0V
___________
SHDN=VIN or GND
VOUT+1V≤VIN≤VOUT+2V,
VIN≥2.5V
IOUT=10mA
VIN=VOUT+1V, VIN≥2.5V
1mA≤IOUT≤150mA
10Hz to 100kHz
CIN=1μF, VOUT=3.3V,
IOUT=150mA
f=100Hz
VIN=VOUT+1V
f=1kHz
IOUT=100mA
f=10kHz
μs
0.4
2.0
V
V
-1
+1
μA
160
°C
20
°C
0.09
%/V
0.2
%
195
μVRMS
63
55
dB
40
Note 5: ΔVDO just defined for device with VOUT≥2.5V.
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UM1650 UM1750
Typical Application Circuit
Figure 1. UM1650S-xx Typical Application Circuit
Figure 2. UM1750S-xx/UM1750Y-xx/UM1750DA-xx (Fixed VOUT)
Typical Application Circuit
Figure 3. UM1750S-00/UM1750Y-00/UM1750DA-00 (Adjustable VOUT)
Typical Application Circuit
UM1750S-00/UM1750Y-00/UM1750DA-00 Output Voltage Setting
The output voltage of the UM1750 adjustable regulator is programmed using an external resistor
divider as shown in Figure 3. The output voltage is calculated using:
R1 ⎞
⎛
VOUT = VFB ⎜1 +
⎟
⎝ R2 ⎠
Where: VFB=1.00V (Typ) (the internal reference voltage)
Resistors R1 and R2 should be chosen for approximately 3-5μA divider current. Lower value
resistors can be used but offer no inherent advantage and waste more power. Higher values should
be avoided, as leakage currents at FB increase the output voltage error. The recommended design
procedure is to choose R2=200kΩ to set the divider current at 5μA and then calculate R1 using:
⎞
⎛V
R1 = ⎜⎜ OUT − 1⎟⎟ × R 2
⎠
⎝ VFB
Where: VFB=1.00V (Typ).
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UM1650 UM1750
Typical Performance Characteristics
(Shown for 3.3V Output Option)
Quiescent Current vs. Input Voltage
IOUT=0mA
GND Current vs. Output Current
VIN=4.3V
Output Voltage vs. Output Current
VIN=4.3V
Quiescent Current vs. Temperature
VIN=4.3V, IOUT=0mA
Output Voltage vs. Input Voltage
IOUT=350mA
Output Voltage vs. Temperature
VIN=4.3V, IOUT=10mA
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UM1650 UM1750
Typical Performance Characteristics (Continued)
(Shown for 3.3V Output Option)
PSRR vs. Frequency
Dropout Voltage vs. Output Current
IOUT=10mA
IOUT=100mA
Load Transient Response
Noise
UM1750S-33, VIN=4.3V, IOUT=20mA to 200mA
UM1750S-33, VIN=4.3V, IOUT=150mA,
CIN=COUT=1μF
195μVRMS
IOUT
100mA/div
500μV/div
VOUT
100mV/div
20ms/div
100μs/div
f=10Hz to 100kHz
Line Transient Response
Startup Waveform
UM1750S-33, VIN=4.3V, RL=33Ω
UM1750S-33, VIN=4.3V to 5.3V, IOUT=100mA
VIN
VEN
1V/div
2V/div
VOUT
VOUT
100mV/div
1V/div
100μs/div
10μs/div
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UM1650 UM1750
Package Information
UM1650S-xx: SOT23-3
Outline Drawing
DIMENSIONS
Symbol
A
A1
A2
b
c
D
E
E1
e
e1
L
θ
MILLIMETERS
Min Typ Max
1.013 1.15 1.40
0.00 0.05 0.10
1.00 1.10 1.30
0.30
0.50
0.10 0.15 0.20
2.82
3.10
1.50 1.60 1.70
2.60 2.80 3.00
0.95REF
1.90REF
0.30
0.60
0°
8°
INCHES
Min
Typ Max
0.040 0.045 0.055
0.000 0.002 0.004
0.039 0.043 0.051
0.012
0.020
0.004 0.006 0.008
0.111
0.122
0.059 0.063 0.067
0.102 0.110 0.118
0.037REF
0.075REF
0.012
0.024
0°
8°
1.20
2.35
Land Pattern
NOTES:
1. Compound dimension: 2.92×1.60;
2. Unit: mm;
3. General tolerance ±0.05mm unless otherwise
specified;
4. The layout is just for reference.
Tape and Reel Orientation
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UM1650 UM1750
UM1750S-xx: SOT23-5
Outline Drawing
Symbol
A
A1
A2
b
c
D
E
E1
e
e1
L
θ
DIMENSIONS
MILLIMETERS
INCHES
Min Typ Max Min
Typ Max
1.013 1.15 1.40 0.040 0.045 0.055
0.00 0.05 0.10 0.000 0.002 0.004
1.00 1.10 1.30 0.039 0.043 0.051
0.30
0.50 0.012
0.020
0.10 0.15 0.20 0.004 0.006 0.008
2.82
3.10 0.111
0.122
1.50 1.60 1.70 0.059 0.063 0.067
2.60 2.80 3.00 0.102 0.110 0.118
0.95REF
0.037REF
1.90REF
0.075REF
0.30
0.60 0.012
0.024
0°
8°
0°
8°
Land Pattern
NOTES:
1. Compound dimension: 2.92×1.60;
2. Unit: mm;
3. General tolerance ±0.05mm unless otherwise
specified;
4. The layout is just for reference.
Tape and Reel Orientation
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UM1650 UM1750
UM1750Y-xx: SOT89-5
20
0
Outline Drawing
L
R
0.
DIMENSIONS
A
L
E
Symbol
MILLIMETERS
INCHES
Min
Typ
Max
Min
Typ
Max
A
1.40
1.50
1.60
0.055
0.059
0.063
b
0.32
-
0.54
0.013
-
0.021
b1
0.38
-
0.62
0.015
-
0.024
c
0.35
-
0.44
0.014
-
0.017
D
4.40
4.50
4.60
0.173
0.177
0.181
D1
1.40
-
1.83
0.055
-
0.072
E
2.30
2.50
2.60
0.091
0.098
0.102
e
L
1.50TYP
0.65
-
0.059TYP
1.20
0.026
-
0.047
1.60
1.60
4.55
5.35
3.10
Land Pattern
NOTES:
1. Compound dimension: 4.50×2.50;
2. Unit: mm;
3. General tolerance ±0.05mm unless otherwise
specified;
4. The layout is just for reference.
Tape and Reel Orientation
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UM1650 UM1750
UM1750DA-xx: DFN6 2.0×2.0
Outline Drawing
E2
A
0.55
-
0.80
0.022
-
0.031
A1
0.00
-
0.05
0.000
-
0.002
A3
A1
A
A3
E
L
Symbol
DIMENSIONS
INCHES
MILLIMETERS
Typ Max
Min Typ Max Min
0.20REF
0.008REF
b
0.25
0.30
0.35
0.010
0.012
0.014
D
1.924
2.00
2.076
0.076
0.079
0.082
D2
1.35
-
1.75
0.053
-
0.069
E
1.924
2.00
2.076
0.076
0.079
0.082
E2
0.65
-
1.06
0.026
-
0.042
e
L
0.65BSC
0.224
-
0.026BSC
0.45
0.009
-
0.018
Land Pattern
0.20
2.00
0.70
0.45
2.00
2.40
1.65
0.65
0.35
NOTES:
1. Compound dimension: 2.00×2.00;
2. Unit: mm;
3. General tolerance ±0.05mm unless otherwise
specified;
4. The layout is just for reference.
Tape and Reel Orientation
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UM1650 UM1750
GREEN COMPLIANCE
Union Semiconductor is committed to environmental excellence in all aspects of its
operations including meeting or exceeding regulatory requirements with respect to the use
of hazardous substances. Numerous successful programs have been implemented to
reduce the use of hazardous substances and/or emissions.
All Union components are compliant with the RoHS directive, which helps to support
customers in their compliance with environmental directives. For more green compliance
information, please visit:
http://www.union-ic.com/index.aspx?cat_code=RoHSDeclaration
IMPORTANT NOTICE
The information in this document has been carefully reviewed and is believed to be
accurate. Nonetheless, this document is subject to change without notice. Union assumes
no responsibility for any inaccuracies that may be contained in this document, and makes
no commitment to update or to keep current the contained information, or to notify a
person or organization of any update. Union reserves the right to make changes, at any
time, in order to improve reliability, function or design and to attempt to supply the best
product possible.
Union Semiconductor, Inc
Add: Unit 606, No.570 Shengxia Road, Shanghai 201210
Tel: 021-51093966
Fax: 021-51026018
Website: www.union-ic.com
________________________________________________________________________
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