NCP1547 ON Semiconductor, NCP1547 Datasheet - Page 4

• Manufacturer Part Number: NCP1547
• Description: Buck Regulator
• Manufacturer: ON Semiconductor

ELECTRICAL CHARACTERISTICS
Oscillator
PWM Comparator
Power Switch
Error Amplifier
Sync
Shutdown
Thermal Shutdown
3. Guaranteed by design, not 100% tested in production.
Operating Frequency
Frequency Line Regulation
Maximum Duty Cycle
V
Slope Compensation Voltage
Minimum Output Pulse Width
Current Limit
Foldback Current
Saturation Voltage
Current Limit Delay
Internal Reference Voltage
Reference PSRR
FB Input Bias Current
Output Source Current
Output Sink Current
Output High Voltage
Output Low Voltage
Unity Gain Bandwidth
Open Loop Amplifier Gain
Amplifier Transconductance
Sync Frequency Range
Sync Pin Bias Current
Sync Threshold Voltage
Shutdown Threshold Voltage
Shutdown Pin Bias Current
Overtemperature Trip Point
Thermal Shutdown Hysteresis
FB
Frequency Foldback Threshold
Characteristic
(0°C < T
Fix V
V
V
V
I
(Note 3)
(Note 3)
V
V
V
V
(Note 3)
(Note 3)
(Note 3)
V
V
(Note 3)
(Note 3)
OUT
FB
FB
FB
C
C
FB
FB
SYNC
SHDNB
= 1.270 V, V
= 1.270 V, V
J
to V
> 0.36 V
< 0.29 V
= 1.0 V
= 2.0 V
FB,
= 1.5 A, V
< 70°C, 4.5 V< V
= 5.0 V
DV
SW
= 0 V
C
/DT
http://onsemi.com
Test Conditions
BOOST
FB
FB
ON
NCP1547
= 1.0 V
= 2.0 V
IN
= V
−
−
−
−
−
−
−
−
−
4
< 40 V; unless otherwise specified.)
IN
+ 2.5 V
1.244
0.29
1.39
0.14
Min
306
377
175
5.0
1.6
0.9
0.4
5.0
0.9
1.0
85
15
15
−
−
−
−
−
−
−
−
−
−
1.270
0.05
0.32
0.02
1.46
5.00
Typ
340
100
120
500
360
185
9.0
2.3
1.5
0.7
6.4
1.5
1.3
90
40
25
25
20
70
42
−
1.296
Max
0.15
0.36
1.53
374
200
160
710
485
195
3.0
2.1
1.0
0.1
1.9
1.6
95
17
35
35
60
35
−
−
−
−
−
mV/ms
mA/V
Unit
%/V
kHz
kHz
kHz
mV
dB
mA
mA
mA
dB
mA
mA
ns
ns
°C
°C
%
V
A
A
V
V
V
V
V