NCP1546 ON Semiconductor, NCP1546 Datasheet - Page 5

• Manufacturer Part Number: NCP1546
• Description: Buck Regulator
• Manufacturer: ON Semiconductor

ELECTRICAL CHARACTERISTICS (continued)
Characteristic
General
4. Guaranteed by design, not 100% tested in production.
Quiescent Current
Shutdown Quiescent Current
Boost Operating Current
Minimum Boost Voltage
Startup Voltage
Minimum Output Current
V
V
FB
IN
2.9 V LDO
Regulator
Voltage
SHDNB
1.27 V
Comparator
Shutdown
−
1.46 V
+
1.3 V
+
−
SHDNB
Amplifier
+
−
Error
−
Test Conditions
+
I
V
V
Note 4
SW
SHDNB
BOOST
= 0 A
Figure 2. Block Diagram
∑
V
(0°C < T
= 0 V
− V
C
Comparator
0.32 V
SW
http://onsemi.com
5.0 mA
PWM
−
+
= 2.5 V
J
Artificial
Ramp
< 70°C, 4.5 V< V
NCP1546
+
−
−
−
5
Limit Foldback
+
−
and Current
Frequency
IN
Oscillator
< 40 V; unless otherwise specified.)
SYNC
Comparator
Current
Limit
I
FOLDBACK
−
+
S
R
Min
Q
Shutdown
6.0
2.2
Thermal
−
−
−
−
I
REF
Typ
Output
Driver
4.0
1.0
3.3
7.0
15
−
Max
7.5
5.0
2.5
4.4
40
12
Unit
V
GND
BOOST
mA/A
SW
mA
mA
mA
V
V