RT8204BGQW Richtek USA Inc, RT8204BGQW Datasheet - Page 9

• 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

DS8204B-03 March 2011
(10V/Div)
EN/DEM
PHASE
(5V/Div)
PGOOD
(5V/Div)
(1V/Div)
1.0540
1.0535
1.0530
1.0525
1.0520
1.0515
1.0510
1.0505
1.0500
V
OUT
3.0
2.5
2.0
1.5
1.0
0.5
0.0
0
7
LDO Output Voltage vs. Output Current
DEM-Mode
Shutdown Current vs. Input Voltage
0.5
9
1
11
Power On from EN
1.5
Output Current (A)
13
Time (800μs/Div)
Input Voltage (V)
2
15
V
2.5
IN
= 12V, EN = 5V, No Load
17
3
EN = GND, No Load
19
3.5
V
21
IN
4
= 1.25V
23
4.5
25
5
(20V/Div)
(10V/Div)
EN/DEM
EN/DEM
(2V/Div)
(2V/Div)
UGATE
PHASE
PGOOD
(5V/Div)
(1V/Div)
(5V/Div)
(1V/Div)
LGATE
V
V
OUT
OUT
400
390
380
370
360
350
340
330
320
310
300
290
280
7
PWM-Mode
Standby Current vs. Input Voltage
9
11
Power Off from EN
Power On from EN
13
Time (800μs/Div)
Input Voltage (V)
Time (4ms/Div)
V
V
IN
IN
15
= 12V, EN = Floating, No Load
= 12V, EN = Floating, No Load
17
RT8204B
19
www.richtek.com
EN = 5V, No Load
21
23
9
25