RT8023GQW Richtek USA Inc, RT8023GQW Datasheet - Page 9

• Manufacturer Part Number: RT8023GQW
• Description: IC CONV STP-DWN W/2 LDO 24WQFN
• Manufacturer: Richtek USA Inc

Specifications of RT8023GQW

• Topology: Step-Down (Buck) Synchronous (1), Linear (LDO) (2)
• Function: Any Function
• Number Of Outputs: 3
• Frequency - Switching: 1.2MHz
• Voltage/current - Output 1: 0.8 V ~ 5 V, 1.5A
• Voltage/current - Output 2: 0.8 V ~ 5 V, 700mA
• Voltage/current - Output 3: 0.8 V ~ 5 V, 350mA
• W/led Driver: No
• W/supervisor: No
• W/sequencer: Yes
• Voltage - Supply: 2.4 V ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 24-WFQFN Exposed Pad
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

(500mV/Div)
(50mV/Div)
DS8023-02 February 2011
(0.5A/Div)
V
V
(1A/Div)
(2V/Div)
OUT1
OUT1
I
I
V
OUT1
IN1
EN1
600
500
400
300
200
100
0
0
LDO1 Dropout Voltage vs. Load Current
V
V
I
OUT1
IN1
IN1
Buck Load Transient Response
100
= 5V, V
= 3.3V, V
= 0A to 1.5A
Buck Power On from EN
OUT1
200
OUT1
Load Current (mA)
Time (100μs/Div)
Time (50μs/Div)
= 1.2V
= 1.2V, I
300
T
A
= 25°C
OUT1
400
T
= 1.5A
A
= 125°C
500
V
OUT2
T
A
600
= -40°C
= 2.5V
700
(500mA/Div)
(500mV/Div)
(5mV/Div)
I
(0.5A/Div)
PHASE1
V
V
(2V/Div)
V
(2V/Div)
(5V/Div)
V
OUT1
I
PGOOD1
OUT1
PHASE1
OUT1
V
EN1
600
500
400
300
200
100
0
LDO2 Dropout Voltage vs. Load Current
0
V
I
V
OUT1
IN1
IN1
I
PHASE1
= 3.3V, V
= 3.3V, V
50
= 1.5A
Buck Switching Waveforms
Buck PGOOD Response
100
OUT1
OUT1
Load Current (mA)
Time (100μs/Div)
Time (1μs/Div)
= 1.2V
= 1.2V, I
T
150
A
= 25°C
OUT1
200
= 1.5A
T
RT8023
A
www.richtek.com
= 125°C
250
V
OUT3
T
A
300
= -40°C
= 2.5V
350
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