RT8008GB Richtek USA Inc, RT8008GB Datasheet - Page 2

• Manufacturer Part Number: RT8008GB
• Description: IC DC-DC REG STP-DN SYNC SOT23-5
• Manufacturer: Richtek USA Inc
• Type: Step-Down (Buck), PWMr

Specifications of RT8008GB

• Internal Switch(s): Yes
• Synchronous Rectifier: Yes
• Number Of Outputs: 1
• Voltage - Output: 0.6 V ~ 5.5 V
• Current - Output: 600mA
• Frequency - Switching: 1.5MHz
• Voltage - Input: 2.5 V ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: SC-74A, SOT-753
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

RT8008
Typical Application Circuit
with R2 = 300kΩ to 60kΩ so the I
and (R1 x C1) should be in the range between 3x10
Layout Guide
www.richtek.com
2
V
Layout note:
1. The distance that C
2. C
OUT
OUT
=
V
should be placed near RT8008.
REF
V
IN
VOUT
x
VIN
⎛
⎜
⎝
1
+
R2
R1
IN
4
5
C
⎞
⎟
⎠
IN
connects to V
GND
GND
3
2
1
C
2.2V to 5.5V
2.2V to 5.5V
OUT
LX
GND
EN
R2
= 2μA to 10μA,
V
V
IN
IN
IN
Figure 2. Adjustable Voltage Regulator
is as close as possible (Under 2mm).
V
OUT
Figure 1. Fixed Voltage Regulator
L
4.7µF
4.7µF
C
C
IN
IN
-6
4
1
4
1
and 6x10
VIN
EN
Figure 3
VIN
EN
RT8008
RT8008
GND
GND
2
VOUT
2
-6
FB
LX
LX
for component selection.
3
5
3
5
2.2µH
L
V
2.2µH
OUT
I
L
R2
R1
V
C1
C1
IN
VIN
FB
R1
R2
R2
C
10µF
OUT
V
10µF
C
4
5
OUT
C
OUT
V
IN
OUT
GND
3
2
1
GND
DS8008-06 March 2011
C
OUT
LX
GND
EN
V
OUT
L