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MP9472 Datasheet(PDF) 4 Page - Monolithic Power Systems

Part # MP9472
Description  0.45A, 18V, Non-Synchronous, Rectified, Step-Down Converter
PDF  16 Pages
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Manufacturer  MPS [Monolithic Power Systems]
Direct Link  http://www.monolithicpower.com
Logo MPS - Monolithic Power Systems

MP9472 Datasheet(HTML) 4 Page - Monolithic Power Systems

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MP9472–0.45A, 18V, NON-SYNCHRONOUS, RECTIFIED, STEP-DOWN CONVERTER
MP9472 Rev. 1.0
www.MonolithicPower.com
4
12/9/2015
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2015 MPS. All Rights Reserved.
ELECTRICAL CHARACTERISTICS
VIN = 12V, TJ = -40°C to 125°C. Typical value is tested at TJ = 25°C, unless otherwise noted.
Parameter
Symbol Condition
Min
Typ
Max
Units
Shutdown supply current
VEN = 0V, TJ = 25°C
1
μA
Supply current
VEN = 5.0V, VFB = 1.0V
1.3
1.8
mA
4.75V ≤ VIN ≤ 18V
0.900
0.923
0.946
V
Feedback voltage
VFB
VIN = 12V
0.905
0.923
0.941
V
Feedback reference voltage drift
(5)
20°C ≤ TJ ≤ 50°C
-2
2
mV
Feedback overvoltage threshold
1.1
V
Error amplifier voltage gain
(6)
AEA
400
V/V
Error amplifier transconductance
GEA
ΔIC = ±10μA
800
μA/V
High-side switch on resistance
(6)
RDS(ON)
175
mΩ
High-side switch leakage current
VEN = 0V, VSW = 0V
10
μA
Upper switch current limit
Duty = 80%, TJ = 25°C
0.5
1
A
COMP to current sense
transconductance
GCS
3.5
A/V
Oscillation frequency
Fosc1
300
340
380
kHz
Short-circuit oscillation frequency
Fosc2
VFB = 0V
100
kHz
Maximum duty cycle
(5)
DMAX
VFB = 0.8V,
20°C ≤ TJ ≤ 50°C
86
90
%
Minimum on time
(5)
220
ns
EN shutdown threshold voltage
VEN rising
1.1
1.5
2.0
V
EN shutdown threshold voltage
hysteresis
210
mV
EN lockout threshold voltage
2.2
2.5
2.7
V
EN lockout hysteresis
210
mV
Input under-voltage lockout threshold
VIN rising
3.80
4.50
V
Input under-voltage lockout threshold
hysteresis
210
mV
Soft-start current
VSS = 0V
6
μA
Soft-start period
CSS = 0.1μF
15
ms
Thermal shutdown entry
(5)
160
°C
Thermal shutdown threshold
hysteresis
(5)
30
°C
NOTES:
5) Guaranteed by characterization, not production tested.
6) Guaranteed by design



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