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MP8719 데이터시트(PDF) 4 Page - Monolithic Power Systems

부품명 MP8719
상세설명  26V, 12A, Low IQ, High-Current, Synchronous Buck Converter with (-)1A LDO and Buffered Reference
PDF  22 Pages
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제조업체  MPS [Monolithic Power Systems]
홈페이지  http://www.monolithicpower.com
Logo MPS - Monolithic Power Systems

MP8719 데이터시트(HTML) 4 Page - Monolithic Power Systems

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MP8719 – 26V, 12A, HIGH-CURRENT, SYNC BUCK CONVERTER WITH ±1A LDO
MP8719 Rev1.01
www.MonolithicPower.com
4
8/3/2017
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2017 MPS. All Rights Reserved.
ELECTRICAL CHARACTERISTICS
VIN = 12V, 3V3 = 3.3V, TJ = 25°C, RMODE = 0Ω, unless otherwise noted.
Parameters
Symbol
Condition
Min
Typ
Max
Units
Supply Current
3V3 supply current in normal
mode
I3V3
VEN1 = VEN2 = 3V, no load
185
µA
3V3 supply current in S3 mode
I3V3_S3
VEN1 = 0V, VEN2 = 3V,
no load
135
µA
3V3 shutdown current
I3V3 SDN
VEN1 = VEN2 = 0V, no load
1
µA
MOSFET
High-side switch on resistance
HSRDS-ON
TJ = 25°C
19.5
mΩ
Low-side switch on resistance
LSRDS-ON
TJ = 25°C
6.6
mΩ
Switch leakage
SWLKG
VEN = 0V, VSW = 0V
0
1
μA
Current Limit
Low-side valley current limit
ILIMIT
12
13
14
A
Switching Frequency and Minimum Off Time
Switching frequency
FS
RMODE = 0Ω
700
kHz
RMODE = 150kΩ
500
kHz
Constant on timer
TON
VIN = 6V, VOUT = 3V,
RMODE = 150kΩ
1100
1200
1300
ns
Minimum on time
(6)
TON MIN
70
ns
Minimum off time
(6)
TOFF MIN
300
ns
Ultrasonic Mode (USM)
Ultrasonic mode operation period
TUSM
VFB = 0.62V
32
µs
Protection
OVP threshold
VOVP
125
130
135
%VREF
UVP-1 threshold
VUVP-1
70%
75%
80%
VREF
UVP-1 foldback timer
(6)
TUVP-1
30
µs
UVP-2 threshold
VUVP-2
45%
50%
55%
VREF
Reference and Soft Start, Soft Stop
Reference voltage
VREF
594
600
606
mV
Feedback current
IFB
VFB = 0.62V
10
50
nA
Soft-start time
TSStart
EN to PG up
1.8
2.2
2.6
ms
Soft-stop time
TSStop
2
ms
Enable (EN) and Under-Voltage Lockout (UVLO)
EN1 rising threshold
VEN1 TH
0.54
0.59
0.64
V
EN1 hysteresis
VEN1-HYS
125
mV
EN2 rising threshold
VEN2 TH
1.12
1.22
1.32
V
EN2 hysteresis
VEN2-HYS
125
mV
Enable input current
IEN1/2
VEN1/2 = 2V
5
μA
VEN1/2 = 0V
1



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