CS51033_05 Datasheet, PDF (3/10 Pages) ON Semiconductor – Fast P−Ch FET Buck Controller

CS51033
ELECTRICAL CHARACTERISTICS (Specifications apply for 3.135 ≤ V_CC ≤ 3.465, 3.0 V ≤ V_C ≤ 16 V;
Industrial Grade: −40°C < T_A < 85°C; −40°C < T_J < 125°C: Commercial Grade: 0°C < T_A < 70°C; 0°C < T_J < 125°C, unless otherwise specified.)
Characteristic
Test Conditions
Min
Typ
Max
Unit
Oscillator
Frequency
Charge Current
Discharge Current
Maximum Duty Cycle
Short Circuit Timer
Charge Current
Fast Discharge Current
Slow Discharge Current
Start Fault Inhibit Time
V_FB = 1.2 V
C_OSC = 470 pF
1.4 V < V_COSC < 2.0 V
2.7 V > V_COSC > 2.0 V
1 − (t_OFF/t_ON)
V_FB = 1.0 V; CS = 0.1 mF; V_COSC = 2.0 V
1.0 V < V_CS < 2.0 V
2.55 V > V_CS > 2.4 V
2.4 V > V_CS > 1.5 V
−
160
200
−
110
−
660
80.0
83.3
240
kHz
−
mA
−
mA
−
%
175
264
325
mA
40
66
80
mA
4.0
6.0
10
mA
0.70
0.85
1.40
ms
Valid Fault Time
GATE Inhibit Time
Duty Cycle
2.6 V > V_CS > 2.4 V
2.4 V > V_CS > 1.5 V
−
0.2
0.3
0.45
ms
9.0
15
23
ms
2.5
3.1
4.6
%
CS Comparator
V_FB = 1.0 V
Fault Enable CS Voltage
−
−
2.5
−
V
Max CS Voltage
V_FB = 1.5 V
Fault Detect Voltage
V_CS when GATE goes high
Fault Inhibit Voltage
Minimum V_CS
Hold Off Release Voltage
V_FB = 0 V
Regulator Threshold Voltage Clamp V_CS = 1.5 V
V_FB Comparators
Regulator Threshold Voltage
V_COSC = V_CS = 2.0 V
T_J = 25°C (Note 2)
T_J = −40 to 125°C
Fault Threshold Voltage
T_J = 25°C (Note 2)
T_J = −40 to 125°C
−
2.6
−
V
−
2.4
−
V
−
1.5
−
V
0.4
0.7
1.0
V
0.725
0.866
1.035
V
1.225
1.250
1.275
V
1.210
1.250
1.290
V
1.12
1.15
1.17
V
1.10
1.15
1.19
V
Threshold Line Regulation
Input Bias Current
Voltage Tracking
3.135 V ≤ V_CC ≤ 3.465
V_FB = 0 V
(Regulator Threshold − Fault Threshold Voltage)
−
6.0
15
mV
−
1.0
4.0
mA
70
100
120
mV
Input Hysteresis Voltage
−
−
4.0
20
mV
Power Stage
GATE DC Low Saturation Voltage
V_C = 10 V; V_FB = 1.2 V
V_COSC = 1.0 V; 200 mA Sink
GATE DC High Saturation Voltage V_COSC = 2.7 V; 200 mA Source; V_C = V_GATE
Rise Time
C_GATE = 1.0 nF; 1.5 V < V_GATE < 9.0 V
Fall Time
C_GATE = 1.0 nF; 9.0 V > V_GATE > 1.5 V
Current Drain
I_CC
3.135 V < V_CC < 3.465 V, Gate switching
I_C
3.0 V < V_C < 16 V, Gate non−switching
2. Guaranteed by design, not 100% tested in production.
−
1.2
1.5
V
−
1.5
2.1
V
−
25
60
ns
−
25
60
ns
−
3.5
6.0
mA
−
2.7
4.0
mA
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