RT8204BGQW Richtek USA Inc, RT8204BGQW Datasheet - Page 4

• Manufacturer Part Number: RT8204BGQW
• Description: IC SYNC BUCK W/LDO CTRLR 16WQFN
• Manufacturer: Richtek USA Inc

Specifications of RT8204BGQW

• Topology: Step-Down (Buck) Synchronous (1), Linear (LDO) (1)
• Function: Any Function
• Number Of Outputs: 2
• Voltage/current - Output 1: Controller
• Voltage/current - Output 2: Controller
• W/led Driver: No
• W/supervisor: No
• W/sequencer: No
• Voltage - Supply: 4.5 V ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 16-WFQFN Exposed Pad
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

RT8204B
Function Block Diagram
PWM Controller
LDO Controller
www.richtek.com
4
VOUT
GND
TON
VDD
FB
(Internal)
SS
115% V
70% V
0.75V V
REF
REF
-
+
LEN
GM
LFB
EN/DEM
+
-
SS Timer
TRIG
REF
+
-
-
+
Compute
On-time
1-SHOT
90% V
0.75V V
OV
UV
90% V
50% V
SS ramp
REF
S1
S1
REF
REF
REF
Shutdown
Latch
Thermal
Latch
-
+
Comp
-
+
Q
Q
+
-
-
+
-
+
SS
Q
Min. T
X1
1-SHOT
PGOOD
OFF
TRIG
R
S
Q
Emulation
Diode
LDRV
LPGOOD
+
-
DS8204B-03 March 2011
DRV
DRV
20µA
OC
BOOT
UGATE
PHASE
VDDP
LGATE
PGND