sc2544 Semtech Corporation, sc2544 Datasheet - Page 7

• Manufacturer Part Number: sc2544
• Description: Sc2544 High Performance Wide Input Range Dual Synchronous Buck Controller
• Manufacturer: Semtech Corporation

POWER MANAGEMENT
Block Diagram
2005 Semtech Corp.
ERROUT1
ENABLE
ROSC
FB1
SS1
VCC
VIN
AGND
Oscillator
Ramp
generator
EN
OUT
VCC
3R
FB1
ON/OFF
+
UVLO
(One PWM channel shown)
-
VCC
Ramp1
CLK1
0.75V
R
-
+
+
-
E/A
OUT
PWM
Band
Gap 1
0.75V
UVLO
+
-
OUT
10V
LDO
Band
Gap 2
S
R
R
S
7
0.75V
/Q
Q
Protect 1
0.75V
0.675V
FB1
FB2
OVP
Protect 1
OUT
+
-
-
OUT
Protect 1
+
-
OCP
FB1
PVCC
0.89V
OUT
OVP
PHASE1
PVCC
+
-
OCP
VCC
10u A
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SC2544
DRVH1
PHASE1
DRVL1
PWRGD
BST1
PVCC
ILIM1