參數(shù)資料
型號: LT3513EUHF#PBF
廠商: LINEAR TECHNOLOGY CORP
元件分類: 穩(wěn)壓器
英文描述: 3.5 A SWITCHING REGULATOR, 2220 kHz SWITCHING FREQ-MAX, PQCC38
封裝: 5 X 7 MM, LEAD FREE, PLASTIC, MO-220WHKD, QFN-38
文件頁數(shù): 17/22頁
文件大?。?/td> 374K
代理商: LT3513EUHF#PBF
LT3513
4
3513fc
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
Switch 3 (250mA BOOST)
FB3 Voltage
l
1.20
1.19
1.22
1.24
1.25
V
FB3 Voltage Line Regulation
4.5V < VIN < 30V
0.01
0.03
%/V
FB3 Pin Bias Current
(Note 4)
l
30
200
nA
Error Amplifier 3 Voltage Gain
250
V/V
Error Amplifier 3 Transconductance
ΔI = 10A
220
mhos
Switch 3 Current Limit
(Note 6)
0.25
0.3
0.38
A
Switch 3 VCESAT
ISW3 = 0.2A
200
mV
Switch 3 Leakage Current
FB3 = 1.5V, RUN-SS1 = 0V
0.1
1
A
BIAS Pin Current Due to SW3
ISW3 = 0.2A
18
mA
Maximum Duty Cycle (SW3)
l
84
88
%
Schottky Diode Drop
I = 170mA
900
mV
Switch 4 (250mA Inverter)
NFB4 Voltage
l
–1.205
–1.215
–1.180
–1.155
–1.145
V
NFB4 Voltage Line Regulation
4.5V < VIN < 30V
0.01
0.03
%/V
NFB4 Pin Bias Current
(Note 4)
l
5
16
A
Error Amplifier 4 Voltage Gain
200
V/V
Error Amplifier 4 Transconductance
ΔI = 10A
220
mhos
Switch 4 Current Limit
(Note 6)
0.25
0.3
0.40
A
Switch 4 VCESAT
ISW4 = 0.2A
200
mV
Switch 4 Leakage Current
NFB4 = –1.5V, RUN-SS1 = 0V
0.1
1
A
BIAS Pin Current Due to SW4
ISW4 = 0.2A
18
mA
Maximum Duty Cycle (SW4)
84
88
%
Schottky Diode Drop (D4)
I = 170mA
700
mV
NPN LDO
FB5 Voltage
l
0.61
0.6
0.625
0.63
0.65
V
FB5 Pin Bias Current
(Note 4)
l
30
200
nA
Base Drive Current
FB5 = 0.5V
6
8
10
mA
LDOPWR Minimum Voltage
BD = 3.5V
4.5
V
Note 1: Stresses beyond those listed under Absolute Maximum Ratings
may cause permanent damage to the device. Exposure to any Absolute
Maximum Rating condition for extended periods may affect device
reliability and lifetime.
Note 2: The LT3513E is guaranteed to meet specified performance from
0°C to 125°C junction temperature. Specifications over the –40°C to
125°C operating junction temperature range are assured by design,
characterization and correlation with statistical process controls. The
LT3513I is guarenteed over the full –40°C to 125°C operating junction
temperature range.
Note 3: The CT pin is held low until FB1, FB2, FB3 and NFB4 all ramp
above the FB threshold offset.
Note 4: Current flows out of FB1, FB3, NFB4 and FB5.
Note 5: Current may flow in or out of FB2. The absolute value of this test
is used.
Note 6: Current limit is guaranteed by design and/or correlation to static
test. Slope compensation reduces current limit at higher duty cycles.
Note 7: This is the minimum voltage across the boost capacitor needed to
guarantee full saturation of the internal power switch.
Note 8: This IC includes overtemperature protection that is intended
to protect the device during momentary overload conditions. Junction
temperature will exceed the maximum operating junction temperature
range when overtemperature protection is active. Continuous operation
above the specified maximum operating junction temperature may impair
device reliability.
The l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C. VIN = 12V, BIAS = 3V, unless otherwise noted.
elecTrical characTerisTics
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