sc1112a Semtech Corporation, sc1112a Datasheet - Page 16

• Manufacturer Part Number: sc1112a
• Description: Triple Low Dropout Regulator Controllers
• Manufacturer: Semtech Corporation

© 2001 Semtech Corp.
RB
POWER MANAGEMENT
V
V
OUT
OUT
≤
(
MAX
. 1
=
50
200
. 1
)
μ
200
=
A
VTTIN
V
•
⎛
⎜
⎝
Ω
1
+
(
MIN
RA
RB
)
−
⎞
⎟
⎠
I
OUT
−
0
(
5 .
MAX
VTT SELECT Signal
5VSTBY
ADJGATE
ADJSEN
CAP-
CAP+
FC
DELAY
PWRGD
μ μ
A
)
•
•
R
SC1112
RA
DS
(
ON
AGPGATE
VTTGATE
AGPSEN
AGPSEL
VTTSEN
VTTSEL
)(
VTTIN
MAX
GND
)
C3
0.1u
AGP SELECT Signal
C19
330u
16
Q 1
330u
C8
C9
0.1u
C2
330u
C18
Q 3
0.1u
C13
C6
330u
R1
R2
330u
C16
330u
C12
C14
330u
C1
10u
C17
0.1u
R A
R B
Q 2
+3.3V
+5V STBY
A G P
V T T
1 K
R1
P O W E R G O O D
V T T
0.1u
22n
1u
C5
C10
C11
www.semtech.com
SC1112
5VSTBY
ADJGATE
ADJSEN
CAP-
CAP+
FC
DELAY
PWRGD
SC11