ncp1511 ON Semiconductor, ncp1511 Datasheet - Page 4

• Manufacturer Part Number: ncp1511
• Description: Up To 500 Ma, High Efficiency Synchronous Step-down Dc-dc Converter
• Manufacturer: ON Semiconductor

3. Recommended maximum input voltage is 5 V when the device frequency is synchronized with an external clock signal.
ELECTRICAL CHARACTERISTICS
mode; T
VCC Pin
Sync Pin
Output Level Selection Pins
Shutdown Pin
Feedback Pin
Sync PWM Mode Characteristics
Input Voltage
CB0, CB1 “H” Voltage Threshold
CB0, CB1 “L” Voltage Threshold
CB0 “H” Input Current, CB = 3.6 V
CB0 “L” Input Current, CB = 0 V
CB1 “H” Input Current, CB = 3.6 V
CB1 “L” Input Current, CB = 0 V
Quiescent Current of Sync Mode, I
Quiescent Current of PWM Mode, I
Quiescent Current of Pulsed Mode, I
Quiescent Current, SHD Low
Input Voltage Range (Note 3)
Input Voltage
Frequency Operational Range
Minimum Synchronization Pulse Width
Maximum Synchronization Pulse Width
SYNC “H” Voltage Threshold
SYNC “L” Voltage Threshold
SYNC “H” Input Current, Vsync = 3.6 V
SYNC “L” Input Current, Vsync = 0 V
Input Voltage
SHD “H” Voltage Threshold
SHD “L” Voltage Threshold
SHD “H” Input Current, SHD = 3.6 V
SHD “L” Input Current, SHD = 0 V
Input Voltage
Input Current, Vfb = 1.5 V
Switching P−FET Current Limit
Minimum On Time
Rdson Switching P−FET and N_FET
Switching P−FET and N−FET Leakage Current
Output Overvoltage Threshold
A
= –30 to 85°C for Min/Max values, unless otherwise noted.
Characteristic
out
out
out
= 0 mA
= 0 mA
= 0 mA
(V
in
= 3.6 V, Vo = 1.5 V, T
http://onsemi.com
A
4
= 25°C, Fsyn = 600 kHz 50% Duty Cycle square wave for PWM
Dcsync Max
Dcsync Min
Iq Pulsed
Symbol
Iq PWM
Iq PWM
Ton min
Vsynch
Vshd h
Vsyncl
Isynch
Vsync
Vshd l
Rdson
Fsync
Icb0 h
Icb1 h
Ishd h
Isyncl
Vcb h
Iq Off
Icb0 l
Icb1 l
Ishd l
Vcb l
Vshd
Ileak
Vcb
I lim
Vin
Vfb
Ifb
Vo
−0.3
−0.5
−0.3
−0.5
−0.3
−0.5
−0.3
Min
500
400
400
400
2.5
−
−
−
−
−
−
−
−
−
−
−
−
−
−
−
−
−
−
−
−
−2.2
0.23
Typ
175
185
600
920
830
920
830
920
830
800
0.1
2.2
2.2
0.3
2.2
5.0
5.0
14
30
70
75
−
−
−
−
−
−
−
−
0
Vcc + 0.3
Vcc + 0.3
Vcc + 0.3
Vcc + 0.3
1000
1200
1200
1200
Max
1.0
5.2
1.0
7.5
1.0
−
−
−
−
−
−
−
−
−
−
−
−
−
−
−
−
−
−
−
nsec
Unit
kHz
mV
mV
mV
mV
mV
mV
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
%
%
W
%
V
V
V
V
V