SC4525DSETRT Semtech, SC4525DSETRT Datasheet - Page 18

• Manufacturer Part Number: SC4525DSETRT
• Description: IC BUCK ADJ 3A 8SOIC
• Manufacturer: Semtech
• Series: -r
• Type: Step-Down (Buck), PWM - Current Moder

Specifications of SC4525DSETRT

• Internal Switch(s): Yes
• Synchronous Rectifier: No
• Number Of Outputs: 1
• Voltage - Output: 1 V ~ 16.74 V
• Current - Output: 3A
• Frequency - Switching: 65kHz ~ 350kHz
• Voltage - Input: 3 V ~ 18 V
• Operating Temperature: -40°C ~ 105°C
• Mounting Type: Surface Mount
• Package / Case: 8-SOIC (0.154", 3.90mm Width) Exposed Pad
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: SC4525DSETR

Typical Performance Characteristics
(For A 12V to 5V/3A Step-down Converter with 350kHz Switching Frequency)
© 2011 Semtech Corp.
SS270 REV 6-7
Figure 12(c). Load Transient Response
Figure 12(a). Load Characteristic
6
5
4
3
2
1
0
5V Output Response (1V/DIV, AC Coupling)
0
0.5
Load Characteristic
1
Inductor Current (1A/DIV)
(I
Load Current (A)
O
1.5
= 0.3A to 3A)
40us/DIV
2
2.5
Fig.12b: SS
Fig.12d: OCP
3
3.5
4
Figure 12(d). Output Short Circuit (Hiccup)
Figure 12(b). V
12V Input (5V/DIV)
5V Output (2V/DIV)
SS Voltage (1V/DIV)
Retry Inductor Current (2A/DIV)
5V Output Short (5V/DIV)
IN
SS Voltage (2V/DIV)
Start up Transient (I
10ms/DIV
5ms/DIV
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SC4525D
O
=3A)
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