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MP4012 датащи(PDF) 4 Page - Monolithic Power Systems

номер детали MP4012
подробное описание детали  High-Brightness, High-Current Accuracy WLED Controller
PDF  17 Pages
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производитель  MPS [Monolithic Power Systems]
домашняя страница  http://www.monolithicpower.com
Logo MPS - Monolithic Power Systems

MP4012 датащи(HTML) 4 Page - Monolithic Power Systems

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MP4012 ─ HIGH-VOLTAGE, HIGH-CURRENT ACCURACY WLED CONTROLLER
MP4012 Rev. 1.12
www.MonolithicPower.com
4
10/12/2013
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2013 MPS. All Rights Reserved.
ELECTRICAL CHARACTERISTICS
VIN =24V, TA = +25°C, unless otherwise noted.
Parameters
Symbol Condition
Min
Typ
Max Units
Operating Input Voltage
VIN
8
55
V
VDD Voltage
VVDD
VIN ≥ 8V
7.25
7.75
8.15
V
Supply Current (Shutdown)
ISD
VPWM = 0V
0.8
1.0
mA
VDD Under Voltage Lockout
UVLO
VDD Rising
6.40
6.70
7.20
V
Under Voltage Lockout Hysteresis
500
mV
VDD(external)
Connect external DC voltage
12
V
Internal Regulator
Reference Voltage
VREF
1.218 1.243 1.268
V
Reference Line Regulation
VREFLINE
0.1μF bypassed capacitor,
IREF=0 VDD=7.25-12V
0
20
mV
Reference Load Regulation
VREFLOAD
0.1μF bypassed capacitor,
IREF=0-500uA
0
13
mV
PWM Dimming
PWM Low Threshold
VPWMI-LO VPMWI Falling
0.8
V
PWM High Threshold
VPWMI-HI VPMWI Rising
1.5
V
PWM Pull-down Resistance
RPWM
50
100
150
kΩ
Gate
GATE Short Circuit Current
ISOURCE VGATE=0V, VDD=7.75V
0.2
0.4
A
GATE Sink Current
ISINK
VGATE=7.75V, VDD=7.75V
0.4
0.7
A
GATE Output Rise Time
TRISE
CGATE=1nF, VDD=7.75V
50
85
ns
GATE Output Fall Time
TFALL
CGATE=1nF, VDD=7.75V
25
45
ns
Current Sense
Leading Edge Blanking
TBLANK
100
250
ns
Delay to Output of COMP Comparator
TDELAY1
200
ns
Delay to Output of CLIMIT Comparator
TDELAY2
200
ns
Comparator Offset Voltage
VOFFSET
-25
25
mV
Oscillator
Oscillator Frequency
fOSC1
RT=96kΩ
510
580
650
kHz
Oscillator Frequency
fOSC2
RT=500kΩ
100
115
130
kHz
Maximum Duty Cycle
DMAX
90
92
95
%
SYNC Input High
VSYNCH
1.5
V
SYNC Input Low
VSYNCL
0.8
V
SYNC Output Current
ISYNC
16
μA
Slope Compensation
Current Source Out of SL Pin
ISLOPE
0
95
μA
Internal Current Mirror Ratio
GSLOPE ISLOPE=50μA, RSL=1kΩ
1.8
2.0
2.2
Over Voltage Protection
OVP Threshold
VOVP-TH
4.60
4.95
5.30
V
OVP Threshold Hysteresis
500
mV



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