NCP81232_16 Datasheet, PDF (11/24 Pages) ON Semiconductor – Dual-Channel/Multi-Phase Controller

NCP81232
ELECTRICAL CHARACTERISTICS (V_IN = 12 V, typical values are referenced to T_A = 25°C, Min and Max values are referenced to
T_A from −40°C to 125°C. unless other noted.)
Characteristics
Test Conditions
Symbol
Min
Typ
Max
Unit
DIFFERENTIAL CURRENT−SENSE AMPLIFIER
DC Gain
−3dB Gain Bandwidth
Input Common Mode Voltage Range
Differential Input Voltage Range
(Note 7)
(Note 7)
(Note 7)
GAIN_CA
BW_CA
−0.2
−60
6
V/V
10
MHz
V_CC+0.1 V
−
60
mV
Input Bias Current
SWITCHING FREQUENCY
ISP,ISN = 2.5 V
I_CS
−100
100
nA
Switching Frequency
Rfs = 2.7k
Rfs = 5.1k
Float
Rfs = 8.2k
Short to GND
Rfs = 13k
Rfs = 20k
Rfs = 33k
F_SW
180
200
220
kHz
270
300
330
360
400
440
450
500
550
540
600
660
720
800
880
900 1000 1100
1080 1200 1320
Source Current
SYSTEM RESET TIME
I_FS
45
50
55
mA
System Reset Time
DELAY TIME
Measured from EN to start of soft start
with T_DL = 0 ms
T_RST
1.8
2.0
2.2
ms
Delay Time
Float
Rdl = 33k
Rdl = 20k
Rdl = 13k
Rdl = 8.2k
Rdl = 5.1k
Rdl = 2.7k
Short to GND
(DLY1 Only)
Short to GND (DDR
Mode, DLY2 Only)
(Note 7)
T_DL
−
0
−
ms
0.9
1.0
1.1
1.8
2.0
2.2
2.7
3.0
3.3
3.6
4.0
4.4
7.2
8.0
8.8
10.8
12
13.2
18
20
22
−
T_DL1
−
Source Current
SOFT START TIME
I_DL
45
50
55
mA
Soft Start Time
OTP Configuration 1
(Note 7)
Rss = 13k
Float
Rss = 20k
Rss = 33k
T_SS
0.9
1.0
1.1
ms
2.7
3.0
3.3
3.6
4.0
4.4
5.4
6.0
6.6
OTP Configuration 2
(Note 7)
Rss = 2.7k
Short to GND
Rss = 5.1k
Rss = 8.2k
0.9
1.0
1.1
2.7
3.0
3.3
3.6
4.0
4.4
5.4
6.0
6.6
Source Current
I_SS
45
50
55
mA
Product parametric performance is indicated in the Electrical Characteristics for the listed test conditions, unless otherwise noted. Product
performance may not be indicated by the Electrical Characteristics if operated under different conditions.
7. Guaranteed by design, not tested in production.
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