SC418ULTRT Semtech, SC418ULTRT Datasheet - Page 12

• Manufacturer Part Number: SC418ULTRT
• Description: IC BUCK SYNC ADJ 20MLPQ
• Manufacturer: Semtech
• Series: EcoSpeed™, SmartDrive™r
• Type: Step-Down (Buck)r

Specifications of SC418ULTRT

• Internal Switch(s): No
• Synchronous Rectifier: Yes
• Number Of Outputs: 1
• Voltage - Output: 0.5 ~ 5.5 V
• Frequency - Switching: 200kHz ~ 1MHz
• Voltage - Input: 3 ~ 28 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 20-MLPQ
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Current - Output: -
• Power - Output: -
• Other names: SC418ULTRTTR

Block Diagram
AGND
VOUT
VLDO
TON
FBL
FB
19
A
1
4
7
2
VLDO Switchover MUX
VLDO Switchover Comparator
VDDA
VDDA UVLO
Reference
Soft Start
VDDA
3
Y
FB Comparator
B
A
PGOOD
VIN ULVO
15
Control & Status
LDO
Generator
PSV
On-time
14
ENL
20
EN
17
Zero Cross Detector
VIN
VIN ULVO
Current Limit
detect
VIN
A = connected to pins 18 and PAD
VIN
Gate Drive
6
Control
VDDP
Bootstrap Switch
VIN ULVO
DL
VDDP
VDDP
13
DL
10
11
16
12
8
9
BST
PGND
ILIM
DH
LX
DL
12