NCV8853_16 Datasheet, PDF (5/12 Pages) ON Semiconductor – Automotive Grade Non-Synchronous Buck Controller

NCV8853
ELECTRICAL CHARACTERISTICS (V_IN = 3.4 V to 36 V, EN = 5 V. Min/Max values are valid for the temperature range
−40°C ≤ T_J ≤ 150°C unless noted otherwise, and are guaranteed by test, design or statistical correlation.)
Characteristic
Symbol
Conditions
Min
Typ
Max
Unit
CURRENT SENSE AMP
Input Bias Current
I_sns,bias
NCV885300
NCV885301
30
50
mA
70
120
CURRENT LIMIT / OVER CURRENT PROTECTION
Cycle−by−Cycle Current
V_cl
Limit Threshold
85
100
115
mV
Cycle−by−Cycle Current
t_cl
Limit Response Time
200
nsec
Over Current Protection
Threshold
V_ocp
% of V_cl
125
150
175
%
Over Current Protection
t_ocp
Response Time
200
ns
GATE DRIVERS
Leading Edge Blanking
Time
t_on,min
100
ns
Gate Driver Pull Up Current
I_sink
V_IN − V_GDRV = 4 V
Gate Driver Pull Down
Current
I_src
V_IN − V_GDRV = 4 V
160
230
300
mA
160
230
300
mA
Gate Driver Clamp Voltage
(V_IN – V_GDRV)
Power Switch Gate to
Source Voltage
V_drv
V_gs
V_IN = 4 V
6.0
8.0
10
V
3.8
V
SHORT CIRCUIT PROTECTION
Startup Blanking Time
Short−Circuit Threshold
Voltage
t_scp,dly
V_scp
From start of soft−start, % of soft−start time
% of Feedback Voltage (V_ref)
105
300
%
65
70
75
%
Hiccup Time
SC Response Time
THERMAL SHUTDOWN
Thermal Shutdown
Threshold
t_hcp,dly
t_scp
% of Soft−Start Time
Switcher Running
T_sd
T_J rising
135
%
60
200
ns
160
170
180
°C
Thermal Shutdown
Hysteresis
T_sd,hys
T_J Shutdown – T_J Startup
10
15
20
°C
Thermal Shutdown Delay
t_tsd
T_J > Thermal Shutdown Threshold to stop
switching
200
ns
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.
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