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MP3910 Datasheet(PDF) 3 Page - Monolithic Power Systems

Part # MP3910
Description  Peak Current Mode Boost PWM Controller with Programmable Frequency, External Soft Start, and Light Load Operation
PDF  23 Pages
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Manufacturer  MPS [Monolithic Power Systems]
Direct Link  http://www.monolithicpower.com
Logo MPS - Monolithic Power Systems

MP3910 Datasheet(HTML) 3 Page - Monolithic Power Systems

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MP3910 –PEAK CURRENT MODE BOOST CONTROLLER
MP3910 Rev. 1.11
www.MonolithicPower.com
3
11/6/2014
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2014 MPS. All Rights Reserved.
ELECTRICAL CHARACTERISTICS
VIN = 18V, TJ = -40°C to 125°C (typical value are tested at 25°C), unless otherwise noted.
Parameters
Symbol
Condition
Min
Typ
Max
Units
Input Supply Management
VCC UVLO Threshold
VUVLO
Rising edge
3.9
4.17
4.44
V
VCC UVLO Hysteresis
VUVLO_HYS
350
mV
Shut Down Current
IS
VEN=0V
1
μA
Quiescent Current
IQ
VFB=1.5V
288
523
μA
VCC Regulation Voltage
VCC
VCC Load=0mA to 10mA
10.8
11.8
12.8
V
Driving Signal
Gate Driver Impedance
(Sourcing)
IGATE=-20mA
4.1
Ω
Gate Driver Impedance
(Sinking)
IGATE=20mA
2
Ω
Error Amplifier
Error Amplifier
Transconductance
GEA
VFB is +-50mV from FB threshold
1.26V, VCOMP=1.5V
0.56
mA/V
Maximum Amplifier Output
Current
Sourcing and sinking
75
μA
ISENSE=0V, VFB =1V
COMP High Voltage
ISENSE=1V, Floating COMP
2.4
V
Current Sense
Current Comparator
Leading Edge Blanking
(9)
TLEB
214
ns
ISENSE Limit
Vlimit
TJ=25°C
163
185
206
mV
SCP Limit
(7)
VSCP
350
mV
Current Sense Amplifier
Gain
GSENSE
∆VCOMP/∆VISENSE
2.7
V/V
ISENSE Bias Current
ISENSE
TJ=25°C
0.01
0.15
μA
PWM
VCOMP(Skipping Mode)
(7)
Pulse skipping mode operation
threshold, V(comp)
0.95
V
RT=6.81k
308
337
363
kHz
Switching Frequency
FSW
RT =80.6k
25
30
35
kHz
Minimum ON Time
TON-MIN
214
400
ns
Maximum Duty Cycle
DMAX
RT=6.81k
93
95
%
Soft-start
(8)
Charge Current
ISS
54
μA
Over Load Detection
Discharge Current
17.8
μA
Discharge Current During
Protection
1.66
μA
Charged Threshold Voltage
3.65
V
Over Load Shutdown
Threshold Voltage
3.27
V
Protection Reset Threshold
Voltage
0.2
V



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