RT8251GSP Richtek USA Inc, RT8251GSP Datasheet - Page 6

• Manufacturer Part Number: RT8251GSP
• Description: IC DCDC CTRLR STP-DN 8SOP
• Manufacturer: Richtek USA Inc
• Type: Step-Down (Buck)r

Specifications of RT8251GSP

• Internal Switch(s): Yes
• Synchronous Rectifier: Yes
• Number Of Outputs: 1
• Voltage - Output: 0.8 V ~ 15 V
• Current - Output: 5A
• Frequency - Switching: 570kHz
• Voltage - Input: 4.75 V ~ 24 V
• Operating Temperature: -40°C ~ 85°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

RT8251
Typical Operating Characteristics
www.richtek.com
6
-0.5
-1.5
100
1.5
0.5
1.2
0.8
0.6
0.4
0.2
90
80
70
60
50
40
30
20
10
-1
-2
2
1
0
0
0.001
1
0
Output Voltag Deviation vs. Load Current
-50
0
V
V
V
IN
IN
IN
Quiescent Current vs. Temperature
0.5
= 24V
= 12V
= 5V
-25
Efficiency vs. Load Current
1
0.01
1.5
0
Load Current (A)
Temperature ( ° C)
Load Current (A)
2
25
2.5
0.1
50
3
3.5
75
V
1
V
V
OUT
OUT
V
IN
4
IN
V
100
= 24V
IN
= 3.3V
= 12V
= 3.3V
4.5
= 12V
125
10
5
0.816
0.811
0.806
0.801
0.796
0.791
0.786
100
-0.5
-1.5
1.5
0.5
90
80
70
60
50
40
30
20
10
-1
-2
0
2
1
0
Output Voltage Deviation vs. Input Voltage
-50
0
4
I
I
I
OUT
OUT
OUT
Reference Voltage vs. Temperature
0.5
6.5
= 5A
= 3A
= 0A
-25
Efficiency vs. Load Current
1
9
1.5
0
Temperature ( ° C)
Input Voltage (V)
11.5
Load Current (A)
2
25
2.5
14
DS8251-01 March 2011
50
3
16.5
3.5
75
19
V
V
OUT
4
V
OUT
V
V
IN
100
IN
21.5
IN
= 3.3V
= 24V
= 5V
4.5
= 12V
= 12V
125
24
5