ncp5217a ON Semiconductor, ncp5217a Datasheet - Page 5

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

ELECTRICAL CHARACTERISTICS
INTERNAL SOFT−START
VOLTAGE ERROR AMPLIFIER
DIFFERENTIAL CURRENT SENSE AMPLIFIER
OVERCURRENT PROTECTION SETTING
GATE DRIVERS
2. Guaranteed by design, not tested in production.
Soft−Start Time
DC Gain
Unity Gain Bandwidth
Slew Rate
FB Bias Current
Output Voltage Swing
CS+ and CS− Common−mode
Input Signal Range
Input Bias Current
Input Signal Range
Offset Current at IDRP
[(CS+) − (CS−)] to IDRP Gain
Current−Sense Bandwidth
Maximum IDRP Output Voltage
Minimum IDRP Output Voltage
IDRP Output current
Overcurrent Threshold (OCTH)
Detection Current
Ratio of OC Threshold over
OCSET Voltage
OCSET Voltage for Default
Fixed OC Threshold
OCSET Voltage for Adjustable
OC Threshold
OCSET Voltage for OC Disable
Default Fixed OC Threshold
Adjustable OC Threshold
DH Pull−HIGH Resistance
DH Pull−LOW Resistance
DL Pull−HIGH Resistance
DL Pull−LOW Resistance
Characteristics
VCSCOM_MAX
((CS+) − (CS−))
(IDRP/((CS+) −
VOCSET_DFT
VOCSET_ADJ
V_OCTH_DFT
VOCSET_DIS
IDRP_GAIN
IDRP_offset
GAIN_VEA
IDRP_Max
K_OCSET
CS_range
IDRP_Min
Vmax_EA
I_OCSET
BW_VEA
Vmin_EA
V_OCTH
SR_VEA
Ibias_FB
Symbol
BW_CS
RH_DH
CS_IIB
(CS−)))
I_IDRP
RL_DH
RH_DL
RL_DL
T
(V
SS
IN
= 12 V, V
Rocp = 8.3 ~ 25 kW is connected from OCP
(CS+) – (CS−), Pin IDRP/OCP is shorted to
During OC threshold,
Rocp = 16.7 kW is connected from OCP to
CC
Rocp w 35 kW is connected from OCP to
set a voltage at pin
(CS+) − (CS−) = 70 mV, Isource drops to
Rocp v 2 kW is connected from OCP to
10 mV, V(IDRP) =
COMP PIN TO GND = 100 pF (Note 2)
(CS+) − (CS−) =
95% of the value when V
http://onsemi.com
(CS+) – (CS−),
Sourced from OCP before soft−start,
= 5 V, T
V((CS+) − (CS−)) / V_OCSET
At
0.8 V
OCP
−
200 mA Source current
200 mA Source current
(CS+) − (CS−) = 0 V
3dB to DC Gain (Note 2)
200 mA Sink current
200 mA Sink current
A
Isource_EA = 2 mA
5
Test Conditions
Isink_EA = 2 mA
= −40°C to 85°C, unless other noted)
Refer to AGND
to AGND or FB
AGND or FB
AGND or FB
AGND or FB
AGND or FB
(Note 2)
(Note 2)
(Note 2)
VOCSET = 200 mV
VOCSET = 600 mV
T
A
=−40°C to 85°C
(IDRP)
T
A
= 25°C
= 0.8 V
0.475
0.425
−100
−1.0
−1.0
21.6
Min
−70
200
720
0.9
3.3
2.5
35
15
52
0.525
0.15
0.75
Typ
1.1
2.5
3.5
0.1
2.5
1.5
88
15
20
24
40
20
60
0
2
0.575
0.625
26.4
Max
100
100
600
1.3
0.1
0.3
3.5
1.0
70
35
45
25
68
mA/mV
MHz
MHz
Unit
V/ms
mV
mV
mV
mV
mV
mV
ms
dB
mA
nA
mA
mA
mA
W
W
W
W
V
V
V
V
−