MIC61150 Datasheet PDF - MICREL

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MIC61150
MICREL

Part Number MIC61150
Description Low Input Voltage Single-Supply High-Current LDO
Page 22 Pages


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MIC61150
Low Input Voltage, Single-Supply
High-Current LDO
General Description
Features
The Micrel MIC61150 is a 1.5A output, low input voltage,
single-supply regulator. This regulator operates over a
single input voltage range of 1.1V to 3.6V and offers an
ultra-low dropout less than 200mV over the entire
operating temperature range.
The MIC61150 is designed to drive digital circuits requiring
low voltages at high currents such as DSPs, FPGAs,
microcontrollers, etc. The regulator is available as a 1.0V
fixed-output voltage option or as an adjustable-output
voltage option.
The MIC61150 is stable with a 22µF, low-ESR ceramic
output capacitor, and includes protection features such as
thermal shutdown, current limiting and logic enable.
The MIC61150 is offered in two different packages: a low-
profile, leadless 10-pin 3mm x 3mm MLF® and a 10-pin
ePad MSOP. The MIC61150 has an operating junction
temperature range of 40°C to +125°C.
Single VIN rail: 1.1V to 3.6V
Output voltage accuracy: ±2.5% over temperature
Typical dropout of 75mV at room temperature
– Maximum dropout of 200mV at full load over
temperature
COUT as low as 22µF (ceramic capacitor)
Output voltage adjustable down to 0.5V
Soft-start control via external capacitor
Excellent line and load regulation
Logic controlled shutdown
Thermal-shutdown and current-limit protection
10-pin 3mm × 3mm MLF® package
10-pin ePad MSOP package
Junction temperature range from 40°C to +125°C
Data sheets and support documentation can be found on
Micrel’s web site at: www.micrel.com.
Applications
Point-of-load applications
ASIC / Microprocessor power supply
FPGA power supply
Telecom / Networking cards
Wireless infrastructure
____________________________________________________________________________________________________________
Typical Application
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Dropout Voltage
vs. Output Current
100
VIN = 1.5V
80 VFB = 0V
60 TA = 25ºC
40
20
0
0.0 0.5 1.0
1.5
OUTPUT CURRENT (A)
MLF and MicroLeadFrame are registered trademarks of Amkor Technology, Inc.
Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1 (408) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com
November 2010
M9999-112210-A



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Micrel, Inc.
Ordering Information
Part Number
MIC61150YMME
MIC61150-10YMME
MIC61150YML
MIC61150-10YML
Top Mark
61150
Z10F
ZF15
10ZF
Voltage
Adjustable
1.0V
Adjustable
1.0V
Temperature Range
–40°C to +125°C
–40°C to +125°C
–40°C to +125°C
–40°C to +125°C
Package
ePad MSOP-10L
ePad MSOP-10L
3mm × 3mm MLF®-10L
3mm × 3mm MLF®-10L
MIC61150
Lead Finish
Pb Free
Pb Free
Pb Free
Pb Free
Pin Configuration
10-Pin ePad MSOP (MME)
10-Pin 3mm x 3mm MLF® (ML)
Pin Description
Pin Number
1, 2
3
4
5, 6
Pin Name
IN
GND
EN
NC
7 CP
FB
8
SENSE
9, 10
EP
OUT
GND
Pin Function
Input Voltage.
Ground: Input and output return pin. Connect GND near the point-of-load.
Enable: Active-high control input that allows turn-on/-off of the LDO.
No external function. Tie to ground.
Internal Charge Pump Circuit Output: Connect a 0.1µF to 1µF capacitor from CP pin to GND to
control the ramp rate of the output.
Adjustable Regulator Feedback Input: Connect to the resistor voltage divider network that is
placed from OUT pin to GND pin in order to set the output voltage. See Typical Applications
Circuit.
Fixed-Output Voltage Sense Input: Connect the SENSE pin of the fixed output option at the point-
of-load to accurately monitor the output voltage level.
Regulator Output: The output voltage is set by the resistor divider connected from VOUT to GND
(with the divided connection tied to FB). A 22µF ceramic capacitor with low ESR is required to
maintain stability. See Applications Information.
Connect to GND.
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November 2010
2 M9999-112210-A



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Micrel, Inc.
MIC61150
Absolute Maximum Ratings(1, 2)
VIN to GND...................................................... 0.3V to 4.5V
VCP to GND..................................................... 0.3V to 5.5V
VOUT to GND ...................................................... 0.3V to VIN
VSENSE to GND ................................................... 0.3V to VIN
VEN to GND..................................................... 0.3V to 4.5V
VFB to GND ........................................................ 0.3V to VIN
Junction Temperature (TJ) ......................................... 150°C
Lead Temperature (soldering, 10 sec.)...................... 260°C
Storage Temperature (TS).........................65°C to +150°C
Operating Ratings(3)
Supply Voltage (VIN)......................................... 1.1V to 3.6V
Enable Voltage (VEN)...................................... 0.3V to 3.6V
Output Voltage Range (VOUT)........................... 0.5V to 3.0V
Ambient Temperature Range (TA) .............. –40°C to +85°C
Junction Temperature (TJ) ........................ –40°C to +125°C
Maximum Power Dissipation (PD) ............................. Note 4
Package Thermal Resistance
3mm × 3mm MLF-10L (θJA) ............................60.7°C/W
ePad MSOP-10 (θJA) ......................................76.7°C/W
Electrical Characteristics(5)
VIN = VOUT + 0.2V; VEN = 1.1V; IOUT = 10mA; CCP = 0.1µF; COUT = 22µF; TJ = 25°C. Bold values indicate –40°C TJ +125°C, unless
noted.
Parameter
Condition
Min.
Typ.
Max.
Units
Power Supply Input
Input Voltage Range (VIN)
1.1 3.6 V
Ground Pin Current
IOUT = 1.5A; VIN = 1.2V
IOUT = 1.5A; VIN = 3.6V
1.8
mA
7.6 15
Ground Current in Shutdown
VEN = 0V; VIN = 2V; VOUT = 0V
0.1 10
µA
Reference
Feedback Pin Voltage (FB Pin)
Output Voltage Accuracy
(SENSE Pin)
Load Regulation
Line Regulation(6)
FB Pin Current
Current Limit
Adjustable Output
Fixed Output
IOUT = 10mA to 1.5A
VIN = (VOUT + 0.2V) to 3.6V
VFB = 0.5V
0.495
0.4875
1
2.5
0.3
0.2
0.500
0.500
0.08
0.01
0.505
0.5125
+1
+2.5
0.3
0.2
1
Current Limit
Dropout Voltage
VOUT = 0V
1.7 3.5
Dropout Voltage (VIN VOUT)
IOUT = 1.5A
75
Notes:
1. Exceeding the absolute maximum rating may damage the device.
2. Devices are ESD sensitive. Handling precautions recommended. Human body model (HBM), 1.5k in series with 100pF.
3. The device is not guaranteed to function outside its operating rating.
4. PD(MAX) = (TJ(MAX) – TA) / θJA, where θJA, depends upon the printed circuit layout. See “Applications Information.”
5. Specification for packaged product only.
ww6. w.DVaOtaUTS(h%ee) t=40U.0.c8o×mVIN
200
V
%
%
%/V
µA
A
mV
November 2010
3 M9999-112210-A



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Micrel, Inc.
MIC61150
Electrical Characteristics(5) (Continued)
VIN = VOUT + 0.2V; VEN = 1.1V; IOUT = 10mA; CCP = 0.1µF; COUT = 22µF; TJ = 25°C. Bold values indicate –40°C TJ +125°C, unless
noted.
Parameter
Condition
Min.
Typ.
Max.
Units
Enable Input
EN Logic Level High
EN Logic Level Low
EN Hysteresis
EN Pin Current
Start-Up Time
Minimum Load Current
Minimum Load Current
Thermal Protection
Over-Temperature Shutdown
Over-Temperature Shutdown
Hysteresis
VEN = 0.2V (Regulator Shutdown)
VEN = 3.6V (Regulator Enable)
CCP = 0.1µF; COUT = 10µF
VIN = 1.2V, VOUT = 0.5V
TJ Rising
1.1 0.6
V
0.5 0.2
V
100 mV
0.02
µA
15
250 750
µs
10
160
5
mA
°C
°C
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November 2010
4 M9999-112210-A



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