NCP5222 ON Semiconductor, NCP5222 Datasheet - Page 8

• Manufacturer Part Number: NCP5222
• Description: High Performance Dual-channel / Two-phase Synchronous Buck Controller For Notebook Power System
• Manufacturer: ON Semiconductor

ELECTRICAL CHARACTERISTICS
INTERNAL REFERENCE
SWITCHING FREQUENCY
INTERNAL SOFT−START
SWITCHING REGULATOR
VOLTAGE ERROR AMPLIFIER
DIFFERENTIAL CURRENT SENSE AMPLIFIER
OVERCURRENT PROTECTION
SHARING SWITCH GATE DRIVE
3. Guaranteed by design, not tested in production.
VFB Regulation Voltage
Normal Operation Frequency
Soft−Start Time
Ramp Offset Voltage
Ramp Amplitude Voltage
Minimum Ton
Minimum Toff
DC Gain
Unity Gain Bandwidth
Slew Rate
Output Voltage Swing
CS+ and CS−Common−mode Input
Signal Range
V
Internal Resistance from ICS to 1.25 V
Bias
ICS Voltage Dynamic Range
[V(ICS2)−V(ICS1)] to IFB2 Gain
Current−Sharing Gain
IFB2 Offset Current
IFB2 Current Dynamic Range in 2PH
Mode
OCP Threshold
OCP Fault Latch Blanking Time
Soft−On Source Current
Pull−HIGH Resistance
Pull−LOW Resistance
CS
to I
CS
Gain
Characteristics
(V
VCSCOM_MAX
(IFB2/(V(ICS2)−
(IFB2/(VCS2−V
CC
Vramp_offset
IFB2_GAIN
IFB2_offset
V
GAIN_VEA
RH_DRVS
ICS_GAIN
(ICS/VCS)
VICS_Dyn
ISH_GAIN
RL_DRVS
Vmax_EA
Vramp_V
Vmin_EA
V(ICS1)))
VTH_OC
OCPTblk
SR_VEA
Ton_min
Toff_min
Symbol
FB1
Ft_VEA
= 5 V, V
IDRVS
CS1))
RICS
F
T
, V
SW
SS
FB2
IN
http://onsemi.com
= 12 V, T
T
T
T
T
(Note 3)
V
V
(Note 3)
(Note 3)
COMP to GND 100 pF
(Note 3)
Isource_EA = 2 mA
Isink_EA = 2 mA
Refer to AGND
2PH Mode, V
−V(CS−) = 4 mV
2PH Mode (Note 3)
2PH Mode
2PH Mode (IFB2/((V(CS2+)
−V(CS2−))−(V(CS1+)
−V(CS1−)))
2PH Mode, VCS1 = VCS2 =
0 V
2PH Mode
V(CS+) – V(CS−), Vo = 0.8 V
to 3.3 V
A
A
A
A
IN
IN
A
= −40°C to 85°C
= −40°C to 85°C
= 25°C
= 25°C
8
= 5 V (Note 3)
= 12 V (Note 3)
= −40°C to 85°C, unless other noted)
Test Conditions
CS
= V(CS+)
0.794
0.792
−0.5
Min
276
270
0.8
3.3
−9
27
−
0.75 ~
1.25
1.75
300
360
107
Typ
0.8
0.4
2.5
3.6
0.1
0.5
0.1
70
88
15
20
30
20
10
1
3
1
1
0.806
0.808
Max
324
330
1.2
0.3
3.5
0.5
33
9
−
mA/mV
mA/mV
mA/mV
Unit
MHz
V/ms
kHz
mV
mA
ms
dB
kW
mA
mA
ns
ns
ms
W
W
V
V
V
V
V
V
V