RT9218GS Richtek USA Inc, RT9218GS Datasheet - Page 2

• Manufacturer Part Number: RT9218GS
• Description: IC CTRLR PWM SYNC BUCK 14SOP
• Manufacturer: Richtek USA Inc

Specifications of RT9218GS

• Topology: Step-Down (Buck) Synchronous (1), Linear (LDO) (1)
• Function: Any Function
• Number Of Outputs: 2
• Frequency - Switching: 300kHz
• Voltage/current - Output 1: Controller
• Voltage/current - Output 2: Controller
• W/led Driver: No
• W/supervisor: No
• W/sequencer: No
• Voltage - Supply: 5V, 12V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 14-SOIC (0.154", 3.90mm Width)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

RT9218
Typical Application Circuit
www.richtek.com
2
C5 to C6
1000uF x 2
C1 to C2
1000uF x 2
SV
LV
V
REF
OUT
OUT
:
(0.8V
Internal
2.2uH
=
=
L1
V
V
REF
REF
C3 to C4
1uF x 2
±
2%)
reference
×
R
C
×
(1
(1
MU
ML
Q1
Q2
+
+
R2
R1
R5
R6
PHASE
)
)
voltage
LV
OUT
2.2
Q3
C9
470uF
C7
1uF
R1
4k
1N4148
D1
R2
8k
1
2
3
4
5
6
7
BOOT
UGATE
GND
LGATE
DRV
NC
NC
2.2
RT9218
PGOOD
PHASE
0.1uF
OPS
VCC
C8
FBL
NC
FB
1k/NC
R4
14
13
12
11
10
9
8
68R
R5
0.1uF/NC
C11
C10
1uF
10R
DS9218-08 March 2007
R3
Q4
32R
R6
R
3904
OCSET
PHASE
Disable