SC1109ACSTR SEMTECH [Semtech Corporation], SC1109ACSTR Datasheet - Page 5

• Manufacturer Part Number: SC1109ACSTR
• Description: Synchronous PWM Controller with Dual Low Dropout Regulator Controllers
• Manufacturer: SEMTECH [Semtech Corporation]

Marking Information
POWER MANAGEMENT
Block Diagram
2004 Semtech Corp.
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xxxxx
SC1109ACS
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xxxxx
SC1109A/B
SC1109C
= Datecode (Example: 9912)
= Semtech Lot # (Example: 90101)
SC1109A
VOSENSE
VOSENSE
PWRGD
BCAP+
BCAP-
SS/EN
BCAP+
STBY
BCAP-
SS/EN
VCC
STBY
VCC
VCC
VCC
10uA
2uA
10uA
2uA
Bandgap
VBG
VBG
Bandgap
SC1109BS
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xxxxx
+10%
1.2V
-10%
1.2V
0.8V
0.6V
0.8V
0.6V
SS/EN
-
+
SS/EN
-
+
ERROR AMP
ERROR AMP
-
+
-
+
+
-
+
-
+
-
+
-
SET DOMINATES
HICCUP LATCH
SET DOMINATES
HICCUP LATCH
VBG
VBG
-
+
S
R
-
+
S
R
PWM
PWM
SC1109B
+
-
UVLO
+
-
UVLO
Q
Q
OSCILLATOR
CHARGE
PUMP
OSCILLATOR
CHARGE
PUMP
5
5VSTBY
5VSTBY
OSCILLATOR
OSCILLATOR
5VSTBY
5VSTBY
FAULT
FAULT
R
S
R
S
OVER
CURRENT
OVER
CURRENT
Q
Q
+
-
200mV
+
-
SC1109CS
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xxxxx
LOW SIDE OFF
LOW SIDE OFF
VBG
VBG
VBG
VBG
160uA
SHOOT
THRU
CONTROL
SHOOT
THRU
CONTROL
+
-
+
-
+
-
+
-
HIGH
SIDE
DRIVE
LOW
SIDE
DRIVE
5VSTBY
5VSTBY
HIGH
SIDE
DRIVE
LOW
SIDE
DRIVE
5VSTBY
5VSTBY
VCC
VCC
SC1109C
OCSET
BST
DH
PHASE
DL
GND
GATE2
LDOS2
GATE1
LDOS1
BST
DH
PHASE
DL
GND
GATE2
LDOS2
GATE1
LDOS1
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SC1109