SC2542EVB SEMTECH [Semtech Corporation], SC2542EVB Datasheet - Page 8

• Manufacturer Part Number: SC2542EVB
• Description: High Performance Wide Input Range Dual Synchronous Buck Controller
• Manufacturer: SEMTECH [Semtech Corporation]

© 2005 Semtech Corp.
POWER MANAGEMENT
Block Diagram (Only Channel-1 shown)
ERROUT1
ENABLE
ROSC
FB1
SS1
VCC
VIN
5VSBY
STBY
AGND
VCC
Oscillator
Ramp
generator
STBY
85uA
EN
OUT
VCC
FB1
3R
ON/OFF
+
UVLO
-
VCC
Ramp1
CLK1
0.75V
15uA
R
5V
LDO
-
+
+
-
E/A
OUT
PWM
Band
Gap 1
0.65V
UVLO
+
-
S
R
OUT
10V
LDO
Q
Band
Gap 2
Minumin
Pulse
Generator
R
S
8
0.75V
/Q
Protect 1
0.75V
0.675V
FB1
FB2
OVP
Protect 1
OUT
+
-
-
OUT
Protect 1
+
-
OCP
FB1
PVCC
0.89V
OUT
Skip
Mode
dector
OVP
PHASE1
PVCC
+
-
OCP
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SC2542
VCC
10u A
MINSET1
DRVH1
PHASE1
DRVL1
PWRGD
BST1
PVCC
ILIM1