sip12203 Vishay, sip12203 Datasheet - Page 14

• Manufacturer Part Number: sip12203
• Description: Triple Step Down Controller Ic For 2 Synchronous And 1 Linear Power Rails
• Manufacturer: Vishay

SiP12203
Vishay Siliconix
TYPICAL WAVEFORMS
C2
C3
C4
www.vishay.com
14
C2
C3
C2
C3
C2 (V
C3 (V
C4: D3: 1 V/div)
C2 (V
C3 (V
LDO_IN
LDO_OUT
O1
: 20 mV/div, AC coupled)
O2
Channel 1 Transient Response
: 1 V/div)
: 20 mV/div, AC coupled)
: 1 V/div)
C3 (I
Slew Rate: 1 A/µs
C2 (V
V
L
t: 200 µs/div
LDO Steady State
O1
1
Output Ripple
= 4.7 µH, C
O1
set to 3.3 V/div
O1
: 0.5 A/div)
: 20 mV/div, AC coupled)
O1
L
V
t: 2 µs/div
1
IN
= 600 µF
= L
= 12 V, V
2
= 4.7 µH, C
O1
V
t: 2 µs/div
= 3.3 V, V
LDO_OUT
O1
= C
set to 2.5 V
O2
O2
= 1.2 V,
= 600 µF
C1
C2
C3
C4
C1
C2
C3
C4
C2
C3
C1 (V
C3 (V
C1 (SYNC: 5 V/div)
C3 (V
C2 (V
O
C4 (PG: 2 V/div)
Sync frequency = 8 MHz
t: 1 µs/div
1: 1 V/div)
O1
: 2 V/div)
O2
LDO_OUT
Frequency Synchronization at 8 MHz
: 0.5 V/div)
Channel 2 Transient Response
C2 (V
V
L
t: 200 µs/div
C3 (I
Slew Rate: 1 A/µs
: 1 V/div)
O2
2
= 4.7 µH, C
set to 1.2 V/div
O2
O2
: 20 mV/div, AC coupled)
: 0.5 A/div)
Power Good
O2
= 600 µF
S-82337-Rev. B, 22-Sep-08
V
V
V
t: 2 µs/div
Document Number: 69986
O1
O2
LDO_OUT
set to 3.3 V
set to 1.2 V
set to 2.5 V
C2 (LX1: 10 V/div)
C4 (V
O2
: 1 V/div)