參數(shù)資料
型號： LTM4612IV#PBF
廠商： LINEAR TECHNOLOGY CORP
元件分類： 穩(wěn)壓器
英文描述： SWITCHING CONTROLLER, 940 kHz SWITCHING FREQ-MAX, PBGA133
封裝： 15 X 15 MM, 2.82 MM HEIGHT, LEAD FREE, MO-222, LGA-133
文件頁數(shù)： 20/26頁
文件大?。?/td> 5123K
代理商： LTM4612IV#PBF
LTM4612
4612fa
elecTrical characTerisTics The
l
denotes the specifications which apply over the full internal
operating temperature range, otherwise specifications are at TA = 25°C, VIN = 24V, unless otherwise noted. Per Typical Application
(front page) configuration.
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
IQ(VIN)
Input Supply Bias Current
VIN = 36V, VOUT = 12V, Switching Continuous
VIN = 24V, VOUT = 12V, Switching Continuous
Shutdown, RUN = 0, VIN = 36V
57
48
50
mA
A
IS(VIN)
Input Supply Current
VIN = 36V, VOUT = 12V, IOUT = 5A
VIN = 24V, VOUT = 12V, IOUT = 5A
1.85
2.72
A
VINTVCC
Internal VCC Voltage
VIN = 36V, RUN > 2V, IOUT = 0A
4.7
5
5.3
V
Output Specifications
IOUT(DC)
Output Continuous Current Range
VIN = 24V, VOUT = 12V (Note 4)
0
5
A
DVOUT(LINE)
VOUT
Line Regulation Accuracy
VOUT = 12V, FCB = 0V, VIN = 22V to 36V,
IOUT = 0A
l
0.05
0.3
%
DVOUT(LOAD)
VOUT
Load Regulation Accuracy
VOUT = 12V, FCB = 0V, IOUT = 0A to 5A (Note 4)
VIN = 36V
VIN = 24V
l
0.3
0.6
%
VIN(AC)
Input Ripple Voltage
IOUT = 0A,
CIN = 2 × 10F X5R Ceramic and 1 × 100F
Electrolytic, 1
× 10F X5R Ceramic on VD Pins
VIN = 24V, VOUT = 5V
VIN = 24V, VOUT = 12V
7.2
3.4
mVP-P
VOUT(AC)
Output Ripple Voltage
IOUT = 0A,
COUT = 2 × 22F, 2 × 47F X5R Ceramic
VIN = 24V, VOUT = 5V
VIN = 24V, VOUT = 12V
17.5
12.5
mVP-P
fS
Output Ripple Voltage Frequency
IOUT = 1A, VIN = 24V, VOUT = 12V
940
kHz
DVOUT(START)
Turn-On Overshoot,
TRACK/SS = 10nF
COUT = 200F, VOUT = 12V, IOUT = 0A
VIN = 36V
VIN = 24V
20
mV
tSTART
Turn-On Time, TRACK/SS = Open
COUT = 300F, VOUT = 12V, IOUT = 1A
Resistive Load
VIN = 36V
VIN = 24V
0.5
ms
DVOUT(LS)
Peak Deviation for Dynamic Load
Load: 0% to 50% to 0% of Full Load
COUT = 2 × 22F Ceramic, 150F Bulk
VIN = 24V, VOUT = 12V
153
mV
tSETTLE
Settling Time for Dynamic Load Step Load: 0% to 50% to 0% of Full Load, VIN = 24V
37
s
IOUT(PK)
Output Current Limit
COUT = 200F
VIN = 36V, VOUT = 12V
VIN = 24V, VOUT = 12V
9
A
Control Section
VFB
Voltage at VFB Pin
IOUT = 0A, VOUT = 12V
l
0.591
0.6
0.609
V
VRUN
RUN Pin On/Off Threshold
1
1.5
1.9
V
ISS/TRACK
Soft-Start Charging Current
VSS/TRACK = 0V
–1
–1.5
–2
A
VFCB
Forced Continuous Threshold
0.57
0.6
0.63
V
IFCB
Forced Continuous Pin Current
VFCB = 0V
–1
–2
A
tON(MIN)
Minimum On-Time
(Note 3)
50
100
ns
tOFF(MIN)
Minimum Off-Time
(Note 3)
250
400
ns
RPLLIN
PLLIN Input Resistor
50
k
W
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