lm5171 HTC Korea TAEJIN Technology Co., lm5171 Datasheet - Page 4

• Manufacturer Part Number: lm5171
• Description: 1.5a, 280khz, Boost Regulator
• Manufacturer: HTC Korea TAEJIN Technology Co.

FB Reference Voltage
FB Input Voltage
FB Reference Voltage Line Regulatio
Error Amp Transconductance
Error Amp Gain
Vc Source current
Vc Sink Current
Vc High Clamp Voltage
Vc Low Clamp Voltage
Vc Threshold
Base Operating Frequency
Reduced Operating Frequency
Maximum Duty Cycle
FB Frequency Shift Threshold
Sync Range
Sync Pulse Transition Threshold
SS Bias Current
Shutdown Threshold
Shutdown Delay
Switch Saturation Voltage
Switch Current Limit
Minimum Pulse Width
∆Icc/∆Ivsw
Switch Leakage
Operating Current
Shutdown mode Current
Minimum Operating Input Voltage
Thermal Shutdown
Thermal Hysteresis
Note 2 : Guaranteed by design, not 100% tested in production.
ELECTRICAL CHARACTERISTICS
1.5A, 280kHz, Boost Regulator
Error Amplifier
Oscillator
Sync / Shutdown
Power Switch
General
Characteristics
2.7V≤Vcc≤12V,10mA≤Isw≤1.5A(note2)
12V≤Vcc≤30V, 10mA≤Isw≤1.5A(note2)
Vc tied to FB : Measure at FB
Vsw Switching, Maximum Isw=10mA
I
FB = 1.0V, Vc sources 25uA
Frequency Drops to reduced
2.7V≤Vcc≤12V, 10mA≤Isw≤1.0A
Vc<0.8V, SS=0V, 2.7V≤Vcc≤12V
SWITCH
12V≤Vcc≤30V, 10mA≤Isw≤1.0A
Vc<0.8V, SS=0V, 12V≤Vcc≤30V
FB = 0V, Isw=4.0A, Note 2
Reduce Vc from 1.5V until
FB = 1.5V, Vc sinks 25uA
50% duty cycle, Note 2
80% duty cycle, Note 2
FB = 1.0V, Vc = 1.25V
FB = 1.5V, Vc = 1.25V
I
Vsw = 40V, Vcc = 0V
SWITCH
operating frequency
(2.7V < Vcc < 30 V, 0℃ < T
2.7V ≤ Vcc ≤ 12V
Rise Time = 20 ns
12V ≤ Vcc ≤ 30V
switching stops
= 1.0A, 0℃≤T
Test Condition
I
SWITCH
Ivc = ±25 uA
SS = 3.0V
FB = V
= 1.5A, Note 2
Vc = FB
FB = 1V
FB = 0V
SS = 0V
Isw = 0
− 4 −
Note 2
Note 2
Note 2
= 10mA
REF
A
≤70℃
J
< 125℃, unless otherwise stated. )
1.246
-1.0
0.50
0.25
0.36
300
200
200
200
230
320
-15
200
150
Min
2.5
1.6
1.5
1.5
25
30
90
12
12
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
1.276
0.50
0.40
0.85
0.01
0.55
0.09
2.45
2.0
TYP
550
500
625
625
280
250
180
0.1
1.7
0.8
1.9
1.7
5.5
50
52
94
-3
80
36
10
17
12
25
-
3
-
-
-
-
1.300
1.00
1.20
0.45
2.70
1500
1500
0.03
0.65
0.44
Max
1.0
800
310
120
500
350
200
300
100
100
100
100
210
1.9
1.4
2.4
2.2
LM5171
90
30
30
60
8
8
-
-
-
-
-
mA/A
mA/A
mA/A
mA/A
uMho
HTC
%/V
V/ V
Unit
kHz
kHz
kHz
mA
uA
uA
uA
uA
uA
uA
uA
uA
us
us
ns
℃
℃
%
V
V
V
A
A
V
V
V
V
V
V
V