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MP28114DG-LF-Z

P1-P3P4-P6P7-P9P10-P11
MP28114 – ULTRA-SMALL 1.7mHz, 600mA LOW-VOLTAGE SYNCHRONOUS STEP-DOWN CONVERTER
MP28114 Rev.0.92 www.MonolithicPower.com 4
8/5/2010 MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2010 MPS. All Rights Reserved.
PIN FUNCTIONS
Pin # Name Description
1 SW
Power Switch Output. Inductor connection to drains of the internal PFET and
NFET switches.
2, 3 NC No Connect
4 EN
Regulator Enable Control Input. Drive EN above 1.5V to turn on the MP28114.
Drive EN below 0.3V to turn it off (shutdown current < 0.1µA).
5 FB
Feedback Input. Connect FB to the center point of the external resistor divider.
The feedback threshold voltage is 0.6V.
5 OUT
Output Voltage Sense Input (MP28114DG-1.5, MP28114DG-1.8 and
MP28114DG-3.3). An internal resistor divider is connected to this pin to set the
proper output voltage.
6, 8
GND,
Exposed Pad
Ground. Connect exposed pad to GND plane for optimal thermal performance.
7 IN Supply Input. Bypass to GND with a 2.2µF or greater ceramic capacitor.
MP28114 – ULTRA-SMALL 1.7mHz, 600mA LOW-VOLTAGE SYNCHRONOUS STEP-DOWN CONVERTER
MP28114 Rev.0.92 www.MonolithicPower.com 5
8/5/2010 MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2010 MPS. All Rights Reserved.
TYPICAL PERFORMANCE CHARACTERISTICS
V
IN
= 3.3V, V
OUT
= 1.8V, L1 = 10µH, C1 = 4.7µF, C3 = 10µF, T
A
= +25°C, unless otherwise noted.
2.05
1.95
1.85
1.75
1.65
1.55
1.45
1.35
1.25
OSCILLATOR FREQUENCY (MHz)
2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0
SUPPLY VOLTAGE (V)
Oscillator Frequency vs
Supply Voltage
1.810
1.808
1.806
1.804
1.802
1.800
OUTPUT VOLTAGE (V)
23456
SUPPLY VOLTAGE (V)
Output Voltage vs
Supply Voltage
I
LOAD
= 200mA
1.85
1.83
1.81
1.79
1.77
1.75
1.73
1.71
1.69
1.67
1.65
OUTPUT VOLTAGE (V)
0 100 200 300 400 500 600 700 800 900
LOAD CURRENT (mA)
Output Voltage vs
Load Current
1.3
1.2
1.1
1.0
0.9
0.8
0.7
PFET CURRENT LIMIT (A)
PFET Current Limit vs
Temperature
0.620
0.615
0.610
0.605
0.600
0.595
0.590
0.585
0.580
REGULATED FB VOLTAGE (V)
-50 -30 -10 10 30 40 70 90 110 130 -50 -30 -10 10 30 40 70 90 110 130
Regulated FB Voltage vs
Temperature
100
90
80
70
60
50
40
30
20
10
0
EFFICIENCY (%)
10 100 1000
LOAD CURRENT (mA)
Efficiency vs
Load Current
100
90
80
70
60
50
40
30
20
10
0
EFFICIENCY (%)
10 100 1000
LOAD CURRENT (mA)
Efficiency vs
Load Current
100
90
80
70
60
50
40
30
20
10
0
EFFICIENCY (%)
10 100 1000
LOAD CURRENT (mA)
Efficiency vs
Load Current
100
90
80
70
60
50
40
30
20
10
0
EFFICIENCY (%)
10 100 1000
LOAD CURRENT (mA)
Efficiency vs
Load Current
MP28114 – ULTRA-SMALL 1.7mHz, 600mA LOW-VOLTAGE SYNCHRONOUS STEP-DOWN CONVERTER
MP28114 Rev.0.92 www.MonolithicPower.com 6
8/5/2010 MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2010 MPS. All Rights Reserved.
TYPICAL PERFORMANCE CHARACTERISTICS (continued)
V
IN
= 3.3V, V
OUT
= 1.8V, L1 = 10µH, C1 = 4.7µF, C3 = 10µF, T
A
= +25°C, unless otherwise noted.
Load Transient
V
IN
= 3.3V, V
OUT
= 1.8V,
I
LOAD
= 0 - 500mA Step
Heavy Load Operation
V
IN
= 3.3V, V
OUT
= 1.8V,
I
LOAD
= 600mA
Light Load Operation
V
IN
= 3.3V, V
OUT
= 1.8V,
I
LOAD
= 0A
P1-P3P4-P6P7-P9P10-P11

MP28114DG-LF-Z

Mfr. #:
Buy MP28114DG-LF-Z
Manufacturer:
Monolithic Power Systems (MPS)
Description:
Switching Voltage Regulators 1.7MHz 600MA Low V Step-Down
Lifecycle:
New from this manufacturer.
Delivery:
DHL FedEx Ups TNT EMS
Payment:
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