sic417 Vishay, sic417 Datasheet - Page 5

• Manufacturer Part Number: sic417
• Description: 10-a, 28-v Integrated Buck Regulator With Programmable Ldo
• Manufacturer: Vishay

Notes:
a. V
b. Guaranteed by design.
c. The switch-over threshold is the maximum voltage diff erential between the V
d. The LDO drop out voltage is the voltage at which the LDO output drops 2 % below the nominal regulation point.
ELECTRICAL CHARACTERISTICS
Document Number: 69062
S09-0799-Rev. B, 11-May-09
ELECTRICAL SPECIFICATIONS
Parameter
Fault Protection
I
Valley Current Limit
I
Output Under-Voltage Fault
Smart Power-Save Protection
Threshold Voltage
Over-Voltage Protection Threshold
Over-Voltage Fault Delay
Over Temperature Shutdown
Logic Inputs/Outputs
Logic Input High Voltage
Logic Input Low Voltage
EN/PSV Input Bias Current
ENL Input Bias Current
FBL, FB Input Bias Current
Linear Dropout Regulator
FBL Accuracy
LDO Current Limit
V
V
V
LDO Drop Out Voltage
LIM
LIM
switch-over to V
V
LDO
LDO
LDO
IN UVLO
LDO
Source Current
Comparator Offset Voltage
to V
to V
to V
will not switch-over to V
OUT
OUT
OUT
is programmable using a resistor divider from V
Non-Switch-Over Threshold
Switch-Over Threshold
Switch-Over Resistance
OUT
b
. The non-switch-over threshold is the minimum voltage diff erential between the V
d
b
b
OUT
.
c
c
100
95
90
85
80
75
70
65
60
55
50
P
V
V
LDO_I
V
Symbol
t
FBL_I
SAVE_VTH
FBL
LDO-NBPS
V
OUV_Fault
OV-Delay
LDO-BPS
0
T
R
V
ILM-LK
V
I
I
LIM
Shut
EN-
LDO
Efficiency vs. Output Current (V
IN+
IN-
ACC
LIM
LK
1
V
IN
2
IN
New Product
V
V
V
to ENL to A
V
= 9 V
FB
FB
FB
IN
3
with respect to Internal 500 mV reference,
- 25 °C to + 85 °C for min. and max.,
with respect to internal 500 mV reference
with respect to internal 500 mV reference
Test Conditions Unless Specified
= 12 V, V5V = 5 V, T
From V
Operating current limit, V
Start-up and foldback, V
4
I
OUT
EN/PSV = V5V or A
FBL, FB = V5V or A
V
GND
With respect to A
IN
8 consecutive clocks
IN
V
5
10 °C hysteresis
= 19 V
(A)
LDO
I
to V
R
EN, ENL, PSV
VLDO
T
. The ENL voltage is compared to an internal reference.
J
V
ILIM
V
6
= < 125 °C
OUT
IN
load = 10 mA
VLDO
= 100 mA
LDO
= 5.9 kΩ
= 28 V
7
= 5 V
, V
OUT
A
and V
= + 25 °C for typ.,
VLDO
8
= 1.2 V)
GND
IN
GND
GND
IN
OUT
= + 5 V,
= 12 V
9
= 12 V
pins which ensures that V
10
LDO
and V
0.735
- 140
- 450
Min.
- 10
- 10
135
- 1
6
2
OUT
Vishay Siliconix
Typ.
+ 10
+ 20
0.75
- 25
pins which ensures that
150
200
1.2
10
11
85
8
0
5
2
LDO
www.vishay.com
0.765
+ 140
+ 450
Max.
SiC417
+ 10
+ 10
+ 1
0.4
10
18
will internally
Unit
mV
mV
mA
µA
µA
µs
°C
%
%
Ω
A
V
V
V
5