SIC403A_13 Datasheet, PDF (9/25 Pages) Vishay Siliconix – 6 A microBUCK SiC403A/B Integrated Buck Regulator with Programmable LDO

ELECTRICAL CHARACTERISTICS
100
90
VIN=6V
80
70
VIN=12V
60
Efficiency
50
VIN=20V
40
30
2.5
2
1.5
1
VIN=20V
20
10
0
0.001
PLOSS
0.01
0.1
IOUT(ADC)
VIN=12V
0.5
VIN=6V
0
1
10
Efficiency vs. Load-PSAVE Mode
V_OUT = 1.2 V, V_DD = 5 V = EN/PSV, External Bias, SiC403A
Vout
(20mV/div)
SiC403A, SiC403BCD
Vishay Siliconix
100
2.5
80
VDD3.3V
2
Efficiency
60
1.5
VDD=5V
40
1
20
0
0.001
Ploss
0.01
0.5
VDD=3.3V
0.1
1
VDD=5V
0
10
IOUT(ADC)
Efficiency vs. Load-PSAVE Mode
V_OUT = 1.2 V, V_IN = 12 V, V_DD = EN/PSV = 5 V, External Bias, SiC403A
Vout
(50mV/div)
LX
(5V/div)
Time(20µs/div)
Powersave Mode - No Load
V_IN = 12 V, V_OUT = 1.2 V, I_OUT = 0 A, V_DD = EN/PSV = ENL = 5 V, SiC403A
LX
(5V/div)
Time(2µs/div)
Forced Continuous Mode - No Load
V_IN = 12 V, V_OUT = 1.2 V, I_OUT = 0 A, V_DD = EN/PSV = ENL = 5 V
LX
(10V/div)
LX
(10V/div)
Vout
(500mV/div)
Vout
(500mV/div)
VDD
(5V/div)
Pgood
(5V/div)
Time(1ms/div)
Self-Biased Start-Up - Power Good True
V_IN = 12 V step, V_OUT = 1.2 V, I_OUT = 0 A, V_DD = EN/PSV = ENL = 5 V
(5V/div)
(5V/div)
VDD
Pgood
Time(1ms/div)
Enable Start-Up - Power Good True
V_IN = 12 V, V_OUT = 1.2 V, I_OUT = 1 A, V_DD = EN/PSV= 5 V
Document Number: 62768
For technical questions, contact: [e-mail]
www.vishay.com
S12-1972-Rev. A, 27-Aug-12
9
This document is subject to change without notice.
THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000