ncp4303a ON Semiconductor, ncp4303a Datasheet - Page 5

• Manufacturer Part Number: ncp4303a
• Description: Ncp4303a/b Secondary Side Synchronous Rectification Driver For High Efficiency Smps Topologies
• Manufacturer: ON Semiconductor

ELECTRICAL CHARACTERISTICS
= 12 V, C
otherwise noted)
SUPPLY SECTION
DRIVE OUTPUT
CS INPUT
3. Guaranteed by design.
I
V
V
DRV_pk(source)
I
V
V
I
DRV(CLMP_A)
DRV(CLMP_B)
DRV_pk(sink)
CC_SDM NS
V
V
V
V
V
V
V
DRV(min_A)
DRV(min_B)
Symbol
I
I
V
V
CC_SDM
DRV(H)_A
DRV(H)_A
DRV(H)_B
DRV(H)_B
CC_hyste
I
I
I
I
I
I
T
T
shift_CS
G
th_cs_on
th_cs_off
CC1_A
CC1_B
CC2_A
CC2_B
CC3_A
CC3_B
CC_on
CC_off
R
pd_on
pd_off
t
t
t
t
R
comp
r_A
r_B
f_A
f_B
oh
ol
load
= 0 nF, R
Turn−on threshold level (V
Minimum operating voltage after turn−on (V
V
Internal IC consumption (no output load on pin 8, F
= R
Internal IC consumption (C
R
Internal IC consumption (C
R
Startup current consumption (V
during light load (disable) mode, (F
Startup current consumption (V
during light load (disable) mode, (V
Output voltage rise−time for A version (C
Output voltage rise−time for B version (C
Output voltage fall−time for A version (C
Output voltage fall−time for B version (C
Driver source resistance (Note 3)
Driver sink resistance
Output source peak current (Note 3)
Output sink peak current (Note 3)
Driver high level output voltage on A version (C
Driver high level output voltage on A version (C
Driver high level output voltage on B version (C
Driver high level output voltage on B version (C
Minimum drive output voltage for A version (V
Minimum drive output voltage for B version (V
Driver clamp voltage for A version, (12 V < V
1 nF)
Driver clamp voltage for B version, (12 V < V
1 nF)
The total propagation delay from CS input to DRV output turn on (V
down from 4 V to −1 V, t
The total propagation delay from CS input to DRV output turn off (V
up from −1 V to 4 V, t
Current sense input current source (V
Turn on current sense input threshold voltage
Current sense pin turn off threshold voltage, COMP pin connected to GND
(Note 3)
Compensation inverter gain (Note 3)
CC
Toff_min
Toff_min
Toff_min
_min_ton
hysteresis
= 5 kW)
= 5 kW)
= 5 kW)
= R
_min_toff
r_CS
(For typical values T
f_CS
= 10 kW, V
= 5 ns, COMP pin connected to GND), (Note 3)
CC
load
load
= 5 ns, COMP pin connected to GND)
going up)
= 1 nF on pin 8, F
= 10 nF on pin 8, F
CC
CC
Rating
= V
= V
trig
sw
cs
= 0 V, V
= 500 kHz, V
CS
CC
CC
= 0 V, f_CS = 100 kHz, DC_CS = 50%, V
http://onsemi.com
load
load
_on − 0.1 V) and consumption
_on − 0.1 V) and consumption
load
load
= 0 V)
CC
J
= 10 nF), (Note 3)
= 10 nF), (Note 3)
CC
CC
= 10 nF), (Note 3)
= 10 nF), (Note 3)
trig
= 25°C, for min/max values T
CC
CC
going down)
load
load
load
load
< 28 V, minimum C
< 28 V, minimum C
= 5 V)
sw
= V
= V
5
sw
sw
trig
= 1 nF)
= 10 nF)
= 1 nF)
= 10 nF)
= 400 kHz, R
CC_off
CC_off
= 400 kHz, R
= 500 kHz, R
= 5 V)
+ 200 mV)
+ 200 mV)
Ton_min
Ton_min
Ton_min
load
load
CS
CS
goes
goes
=
=
=
=
J
= −40°C to +125°C, Max T
5,6,8
CS_high
5, 8
5, 8
5, 8
5, 8
Pin
1
1
1
1
1
1
1
1
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
5
= 4 V, V
−120
11.8
Min
9.3
8.3
0.8
8.3
4.5
10
95
−1
−
−
−
−
−
−
−
−
−
−
−
−
−
−
−
−
5
6
−
−
−
−
−
CS_low
Typ
390
280
120
100
−85
9.9
8.9
1.0
4.7
9.3
6.4
1.8
2.5
54
34
80
50
35
12
60
40
−1
4
1
5
−
−
−
−
−
−
7
−
=−1 V unless
J
= 150°C, V
Max
10.5
550
450
105
−50
9.5
1.3
8.3
16
90
55
−
−
−
−
−
−
−
−
−
−
7
2
−
−
−
−
−
−
−
−
0
−
Unit
mA
mA
mA
mV
mV
mA
mA
mA
ns
ns
ns
ns
ns
ns
W
W
V
V
V
A
A
V
V
V
V
V
V
V
V
−
CC