ncp5217a ON Semiconductor, ncp5217a Datasheet - Page 4

• Manufacturer Part Number: ncp5217a
• Description: Single Synchronous Step-down Controller
• Manufacturer: ON Semiconductor

ELECTRICAL CHARACTERISTICS
SUPPLY VOLTAGE
SUPPLY CURRENT
VOLTAGE−MONITOR
REFERENCE OUTPUT
OSCILLATOR
OVERCURRENT THRESHOLD DETECTION
2. Guaranteed by design, not tested in production.
Input Voltage
V
V
in FPWM operation
V
in Power Saving Operation
V
BST Quiescent Supply Current
in FPWM operation
BST Quiescent Supply Current
in power−saving operation
BST Shutdown Current
dV/dt on V
Rising V
V
Power Good High Threshold
Power Good High Hysteresis
Power Good Low Threshold
Power Good Low Hysteresis
Power Good High Delay
Power Good Low Delay
Output Overvoltage Rising
Threshold
Overvoltage Fault Propagation
Delay
Output Undervoltage Trip
Threshold
Output Undervoltage Protection
Blanking Time
Internal Reference Voltage
Operation Frequency
Total Detection Time
OCSET Detection Time
CC
CC
CC
CC
CC
Operating Voltage
Quiescent Supply Current
Quiescent Supply Current
Shutdown Current
UVLO Hysteresis
Characteristics
CC
CC
Threshold
IVCC_FPWM
IBST_FPWM
VPGH_HYS
VPGL_HYS
T_OCDET
IVCC_PS
IVCC_SD
IBST_PS
IBST_SD
VCCHYS
Td_PGH
OVPTblk
UVPTblk
dVCC/dt
T
Symbol
Td_PGL
VCCth+
OVPth+
UVPth
VPGH
VPGL
VREF
DETECT
FSW
V
(V
V
CC
IN
IN
= 12 V, V
CC
EN_SKIP = L, V
regulation point, DH and DL are open,
http://onsemi.com
regulation point, DH and DL are open
EN_SKIP = 2.0 V, V
EN_SKIP = 1.5 V, V
= 5 V, T
EN_SKIP = 5 V, V
EN_SKIP = 5 V, V
FB forced 2% above trip threshold
regulation point. DH, DL are open
regulation point, DH, DL are open
With respect to Error Comparator
With respect to Error Comparator
PGOOD in from higher Vo
PGOOD in from lower Vo
PGOOD high hysteresis
A short period before SS
PGOOD low hysteresis
(PGOOD goes high)
(PGOOD goes high)
A
No boost trap diode
No boost trap diode
(PGOOD goes low)
(PGOOD goes low)
Threshold of 0.8 V
Threshold of 0.8 V
4
Test Conditions
= −40°C to 85°C, unless other noted)
EN_SKIP = 0 V
Wake Up
(Note 2)
(Note 2)
CC
= 5 V, true shutdown
FB
FB
FB
FB
forced above
forced above
forced above
forced above
0.7936
4.05
1.26
1.09
Min
−10
200
105
270
110
4.5
4.5
80
75
−
8/f
4.25
1.92
Typ
275
110
150
115
300
5.0
1.5
1.5
1.5
1.5
0.8
85
−5
80
−
5
SW
0.8064
Max
4.48
2.21
1.47
400
120
330
115
5.5
2.5
2.5
0.3
0.3
27
10
90
85
1
1
−
Unit
V/ms
kHz
mA
mA
mA
mA
mV
ms
ms
uA
mA
us
us
us
%
%
%
%
%
%
V
V
V
V
s