RT8251GSP Richtek USA Inc, RT8251GSP Datasheet - Page 2

• 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
Marking Information
RT8251GQW
Typical Application Circuit
Table 1. Recommended Component Selection
www.richtek.com
2
JM=YM
V
OUT
DNN
3.3
2.5
1.8
1.2
15
10
8
5
(V)
4.75V to 24V
Chip Enable
4.75V to 24V
JM= : Product Code
YMDNN : Date Code
Chip Enable
R1 (k )
52.3
30.9
21.5
12.4
4.99
182
115
91
V
IN
V
C
10nF
IN
SS
Figure 2. Typical Application Circuit for SOP-8 (Exposed Pad)
Exposed Pad (17)
10nF
C
10µF x 2
Exposed Pad(9)
C
SS
R2 (k )
Figure 1. Typical Application Circuit for WQFN-16L 3x3
IN
10
10
10
10
10
10
10
10
10µF x 2
C
IN
1, 2, 3,
15, 16
7
4,
4,
2
7
8
8
R
VIN
EN
SS
GND
VIN
EN
SS
GND
C
51
43
39
30
22
16
13
13
(k )
RT8251
RT8251
COMP
BOOT
COMP
BOOT
SW
FB
C
SW
FB
C
10 to 14
1.2
1.5
1.5
2.2
2.2
2.2
2.2
9
5
6
1
(nF)
1
3
5
6
RT8251GSP
RT8251
GSPYMDNN
2.2nF
C
2.2nF
C
(Open)
C
C
100nF
D
B540C
C
C
BOOT
P
L1 ( H)
C
NC
22k
C
100nF
B540C
R
D
P
BOOT
6.8
4.7
4.7
2.2
2.2
C
22
10
10
22k
R
4.7µH
C
L
4.7µH
L
RT8251GSP : Product Number
YMDNN : Date Code
10k
R1
30.9k
R2
C
OUT
10k
30.9k
R1
R2
44
44
44
44
44
44
44
44
( F)
C
22µF x 2
OUT
C
22µF x 2
OUT
V
3.3V/5A
DS8251-01 March 2011
OUT
V
3.3V/5A
OUT