ncv8871 ON Semiconductor, ncv8871 Datasheet - Page 4

• Manufacturer Part Number: ncv8871
• Description: Ncv8871 Automotive Grade Non-synchronous Boost Controller
• Manufacturer: ON Semiconductor

ELECTRICAL CHARACTERISTICS
guaranteed by test, design or statistical correlation.
GENERAL
OSCILLATOR
ENABLE/SYNCHRONIZATION
CURRENT SENSE AMPLIFIER
Quiescent Current, Sleep Mode
Quiescent Current, Sleep Mode
Quiescent Current, No switching
Quiescent Current, Switching,
normal operation
Minimum pulse width
Maximum duty cycle
Switching frequency
Soft−start time
Soft−start delay
Slope compensating ramp
EN/SYNC pull−down current
EN/SYNC input high voltage
EN/SYNC input low voltage
EN/SYNC time−out ratio
SYNC minimum frequency ratio
SYNC maximum frequency
Synchronization delay
Synchronization duty cycle
Low−frequency gain
Bandwidth
ISNS input bias current
Current limit threshold voltage
Current limit,
Response time
Characteristic
%f
I
f
Symbol
EN/SYNC
I
sync,max
I
I
BW
t
sns,bias
q,sleep
q,sleep
t
D
D
on,min
%t
sync,min
V
t
A
I
I
ss,dly
V
s,dly
(−40°C < T
q,off
q,on
V
t
S
sync
t
max
f
s,ih
csa
ss
s,il
cl
s
cl
a
en
csa
J
V
V
Into VIN pin, EN = 1, No switching
Into VIN pin, EN = 1, Switching
NCV887100
NCV887101
NCV887102
NCV887103
NCV887100
NCV887101
NCV887102
NCV887103
From start of switching with V
reference voltage = V
NCV887100
NCV887101
NCV887102
NCV887103
From EN → 1 until start of switching with
V
NCV887100
NCV887101
NCV887102
NCV887103
V
From SYNC falling edge, to oscillator con-
trol (EN high) or shutdown (EN low), Per-
cent of typical switching period
Percent of f
From SYNC falling edge to GDRV falling
edge
Input−to−output gain at dc, ISNS v 1 V
Gain of A
Out of ISNS pin
Voltage on ISNS pin
NCV887100
NCV887101
NCV887102
NCV887103
CL tripped until GDRV falling edge,
V
< 150°C, 3.2 V < V
IN
IN
FB
EN/SYNC
ISNS
http://onsemi.com
= 13.2 V, EN = 0, T
= 13.2 V, EN = 0, −40°C < T
= 0
= V
csa
cl
= 5 V
s
+ 40 mV
− 3 dB
4
Conditions
IN
REF
< 40 V, unless otherwise specified) Min/Max values are
J
= 25°C
FB
= 0 until
J
< 125°C
Min
153
900
900
306
360
360
360
180
6.0
1.0
1.0
3.0
2.0
1.1
0.9
2.5
90
86
84
89
91
46
13
46
46
25
−
−
−
−
−
−
0
−
−
−
−
−
1000
1000
1.25
1.25
Typ
170
340
240
400
400
400
200
115
2.0
2.0
1.5
3.0
7.4
3.7
5.0
1.0
88
86
91
93
53
16
53
53
50
30
80
−
−
−
−
−
−
−
1100
1100
Max
140
187
374
280
800
350
100
440
440
440
220
125
6.0
2.5
6.0
8.8
1.5
1.5
4.4
5.0
1.1
90
88
93
95
60
19
60
60
10
80
75
50
−
−
−
mV/ms
MHz
MHz
Unit
kHz
V/V
mA
mA
mV
mV
ms
mA
mA
mA
mA
ns
ms
ns
ns
%
%
%
%
V