MIC5271-5.0YM5 TR Micrel Inc, MIC5271-5.0YM5 TR Datasheet

IC REG LDO 100MA -5.0V SOT23-5

MIC5271-5.0YM5 TR

Manufacturer Part Number
MIC5271-5.0YM5 TR
Description
IC REG LDO 100MA -5.0V SOT23-5
Manufacturer
Micrel Inc
Datasheet

Specifications of MIC5271-5.0YM5 TR

Regulator Topology
Negative Fixed
Voltage - Output
-5V
Voltage - Input
Down to -16V
Voltage - Dropout (typical)
0.5V @ 100mA
Number Of Regulators
1
Current - Output
100mA
Operating Temperature
-40°C ~ 125°C
Mounting Type
Surface Mount
Package / Case
SOT-23-5, SC-74A, SOT-25
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Current - Limit (min)
-
Other names
576-1857-2
MIC5271-5.0YM5TR
MIC5271-5.0YM5TR
General Description
The MIC5271 is a µCap 100mA negative regulator in a
SOT-23-5 package. With better than 2% initial accuracy, this
regulator provides a very accurate supply voltage for applica-
tions that require a negative rail. The MIC5271 sinks 100mA
of output current at very low dropout voltage (600mV maxi-
mum at 100mA of output current).
The µCap regulator design is optimized to work with low-
value, low-cost ceramic capacitors. The output typically re-
quires only a 1µF capacitance for stability.
Designed for applications where small packaging and effi-
ciency are critical, the MIC5271 combines LDO design exper-
tise with IttyBitty
reduce power dissipation. Ground current is optimized to help
improve battery life in portable applications. The MIC5271
also includes a TTL-compatible enable pin, allowing the user
to put the part into a zero-current off-mode.
The MIC5271 is available in the SOT-23-5 package for space
saving applications and it is available with an adjustable
output.
Data sheets and support documentation can be found on
Micrel’s web site at www.micrel.com.
Typical Application
IttyBitty is a registered trademark of Micrel, Inc.
October 2003
MIC5271
Micrel, Inc. • 1849 Fortune Drive • San Jose, CA 95131 • USA • tel + 1 (408) 944-0800 • fax + 1 (408) 944-0970 • http://www.micrel.com
Regulator With Adjustable Output
–6.0V
V
IN
packaging to improve performance and
2
1
5
1µF
MIC5271BM5
GND
EN
–IN
–OUT
ADJ
10µF
3
4
Ordering Information
* For other voltage options, please contact Micrel Marketing.
Part Number
MIC5271BM5
MIC5271-3.0BM5
MIC5271-5.0BM5
R1
R2
–5.0V
V
OUT
Marking
1
L9AA
L930
L950
Features
• Stable with ceramic or tantalum capacitor
• Positive and negative enable thresholds
• Low dropout voltage: 500mV @ 100mA
• Low ground current: 35µA @ load = 100µA
• Tight initial accuracy: ±2%
• Tight load and line regulation
• Thermal shutdown
• Current limiting
• IttyBitty
• Zero-current off-mode
Applications
• GaAsFET bias
• Portable cameras and video recorders
• PDAs
• Battery-powered equipment
• Post-regulation of DC-DC converters
µ
Cap Negative Low-Dropout Regulator
Voltage*
–3.0V
–5.0V
Adj.
SOT-23-5 packaging
-1
-2
-3
-4
-5
Junction Temp. Range
5
4
3
2
1
0
-3
MIC5271
–40°C to +125°C
–40°C to +125°C
–40°C to +125°C
-5
SUPPLY VOLTAGE (V)
Enable Input
-7
Regulator Off
Regulator On
Regulator On
-9
-11 -13 -15
SOT-23-5
SOT-23-5
SOT-23-5
Package
MIC5271
Micrel

Related parts for MIC5271-5.0YM5 TR

MIC5271-5.0YM5 TR Summary of contents

Page 1

... The MIC5271 is a µCap 100mA negative regulator in a SOT-23-5 package. With better than 2% initial accuracy, this regulator provides a very accurate supply voltage for applica- tions that require a negative rail. The MIC5271 sinks 100mA of output current at very low dropout voltage (600mV maxi- mum at 100mA of output current). ...

Page 2

... ADJ GND L9AA 4 5 –OUT –IN MIC5271BM5 Adjustable Output Voltage Pin Function Enable Input. TTL logic compatible enable input. Logic High = ON, Logic Low or open = OFF. Ground. Adjustable (Input): Adjustable feedback output connects to resistor voltage divider. Negative Regulator Output. Negative Supply Input. 2 ...

Page 3

... J(max) section for details. Micrel Max Units ppm/°C 0.15 %/V 0.2 1 500 mV 700 mV 900 100 µA mA 3.0 mA +1.0 µA dB 350 mA µs ±0 0.1 µA 10.0 MIC5271 ...

Page 4

... TEMPERATURE (°C) Negative Enable Threshold vs. Supply Voltage -1.6 Enable On -1.4 -1.2 -1 Enable Off -0.8 -0.6 -0.4 -0 -10 -13 -16 SUPPLY VOLTAGE (V) MIC5271 Output Voltage vs. Output Current -3.305 -3.3 -3.295 -3.29 -3.285 -3.28 -3.275 -3.27 -3.265 -3.26 0 -20 -40 -60 -80 -100 OUTPUT CURRENT (mA) ...

Page 5

... MIC5271 Typical Characteristics (continued) Dropout vs. Temperature -700 -600 -100mA Load -500 -400 -50mA Load -300 -200 -100 0 -40 - 100 120 TEMPERATURE (°C) October 2003 5 Micrel MIC5271 ...

Page 6

... MIC5271 Functional Characteristics Load Transient -10mA -100mA TIME (2ms/div.) egative Enable Transient 0V IME (20 s/div.) MIC5271 C = 1µF Ceramic OUT OUT 0V 6 Load Transient -10mA C = 1µF Ceramic -100mA OUT OUT TIME (2ms/div.) ositive Enable Transient 0V 0V IME (20 s/div.) October 2003 Micrel ...

Page 7

... MIC5271 Functional Diagram October 2003 GND ADJ MIC5271-x OUT MIC5271 Micrel ...

Page 8

... In this state, current consumed by the regulator goes nearly to zero. The MIC5271 will be in the on mode when the voltage applied to the enable pin is either greater than the positive threshold or less than the negative threshold. ...

Page 9

... MIC5271 Adjustable Regulator Application MIC5271BM5 5 –V –IN –OUT IN –EN 2 GND ADJ Figure 1. Adjustable Voltage Application The MIC5271BM5 can be adjusted from 1.20V to 14V by using two external resistors (Figure 1). The resistors set the output voltage based on the following equation V  OUT REF R 1 Where ...

Page 10

... A Purchaser’s use or sale of Micrel Products for use in life support appliances, devices or systems is at Purchaser’s own risk and Purchaser agrees to fully indemnify MIC5271 1.75 (0.069) 3 ...

Related keywords