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M7085L-SM1-R 数据表(PDF) 4 Page - Unisonic Technologies

部件名 M7085L-SM1-R
功能描述  PFM STEP-DOWN DC-DC CONTROLLER
PDF  8 Pages
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制造商  UTC [Unisonic Technologies]
网页  http://www.utc-ic.com
标志 UTC - Unisonic Technologies

M7085L-SM1-R 数据表(HTML) 4 Page - Unisonic Technologies

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M7085
CMOS IC
UNISONICTECHNOLOGIESCO.,LTD
4 of 8
www.unisonic.com.tw
QW-R502-092,A
ABSOLUTE MAXIMUM RATING
PARAMETER
SYMBOL
RATINGS
UNIT
Input Voltage
VIN
-0.3 ~ 36
V
PGATE Voltage
VPGATE
-0.3 ~ 36
V
FB Voltage
VFB
-0.3 ~ 5
V
ISENSE Voltage
VISNS
-1.0 ~ 36
V
ADJ Voltage
VADJ
-0.3 ~ 36
V
Power Dissipation (TA =25℃)
PD
400
mW
Junction Temperature
TJ
150
℃
Storage Temperature
TSTG
-65 ~ +150
℃
Note: Absolute maximum ratings are those values beyond which the device could be permanently damaged.
Absolute maximum ratings are stress ratings only and functional device operation is not implied.
OPERATING RATINGS
PARAMETER
SYMBOL
RATINGS
UNIT
Supply Voltage
4.5 ~ 35
V
Operating Junction Temperature
TOPR
-40 ~ +125
℃
ELECTRICAL CHARACTERISTICS
VIN = 12V, VISNS = VIN − 1V, and VADJ = VIN − 1.1V, Ta=25℃
PARAMETER
SYMBOL
TEST CONDITIONS
MIN
TYP
MAX
UNIT
Feedback Voltage (Note 1)
VFB
1.224
1.215
1.240 1.256
1.265
V
Minimum Driver Voltage
VPGATE(MIN)
VIN = 4.5V VFB = 1.0V
IGATE = 100µA sink
1.15
V
Comparator Hysteresis
VHYS
10
15
16
21
mV
RADJ = 20Ω
110
Current Limit Comparator Trip Voltage VCL (Note2)
RADJ = 160Ω
880
mV
Current Limit Comparator Offset
VCL(OFF)
VFB = 1.5V
-20
0
+20
mV
Current Limit ADJ Current Source
ICL(ADJ)
VFB = 1.5V
3.0
5
7.0
µA
FB pin Bias Current (Note 3)
IFB
VFB = 1.0V
320
756
nA
Source
VIN = 7V, PGATE = 3.5V
0.4
Driver Output Current
IPGATE
Sink
VIN = 7V, PGATE = 3.5V
0.3
A
Source
ISOURCE = 100mA
5
Driver Resistance
RPGATE
Sink
ISINK = 100mA
8
Ω
Current Limit One Shot off Time
TCL
VADJ = 11.5V
VISNS = 11.0V
VFB = 1.0V
5
8
13
µS
Minimum on Time in Normal Operation
TOPR(MIN)
VISNS = VADJ+0.1V
CLOAD on OUT = 1000Pf
(Note 4)
110
ns
Minimum on Time in Current Limit
TCL(MIN)
VISNS = VADJ+0.1V
VFB = 1.0V CLOAD on
OUT = 1000pF (Note 4)
185
ns
Feedback Voltage Line Regulation
%VFB/V
△ IN 4.5 ≤ VIN ≤ 35V
0.010
%/V
Quiescent Current at Ground Pin
IQ
FB = 1.5V (Not Switching)
300
500
µA
Note 1. The VFB is the trip voltage at the FB pin when PGATE switches from high to low.
2. VCL = ICL_ADJ * RADJ
3. Bias current flows out from the FB pin.
4. A 1000pF capacitor is connected between VIN and PGATE.



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