RT8055GQW Richtek USA Inc, RT8055GQW Datasheet - Page 6

• Manufacturer Part Number: RT8055GQW
• Description: IC DCDC CONV STP-DN SYNC 10WDFN
• Manufacturer: Richtek USA Inc
• Type: Step-Down (Buck), PWM - Current Moder

Specifications of RT8055GQW

• Internal Switch(s): Yes
• Synchronous Rectifier: Yes
• Number Of Outputs: 1
• Voltage - Output: 0.8 V ~ 5 V
• Current - Output: 3A
• Frequency - Switching: 300kHz ~ 2MHz
• Voltage - Input: 2.6 V ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 10-WFDFN Exposed Pad
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

RT8055
Typical Operating Characteristics
www.richtek.com
6
3.38
3.37
3.36
3.35
3.34
3.33
3.32
3.31
3.30
3.29
3.28
3.27
3.26
100
2.1
2.0
1.9
1.8
1.7
1.6
1.5
90
80
70
60
50
40
30
20
10
0
0.0
3.5
0.0
Switching Frequency vs. Input Voltage
Output Voltage vs. Output Current
3.7
0.3
0.3
Efficiency vs. Output Current
0.6
0.6
3.9
0.9
4.1
0.9
Output Current (A)
Output Current (A)
Input Voltage (V)
1.2
1.2
4.3
1.5
1.5
4.5
V
I
OUT
IN
V
V
= 5V, V
1.8
4.7
1.8
= 0.3A, f
IN
IN
= 5V, V
= 5V, V
2.1
2.1
4.9
OUT
SW
2.4
5.1
2.4
OUT
OUT
= 3.3V
= 1.8MHz
= 3.3V
= 3.3V
2.7
2.7
5.3
3.0
3.0
5.5
2.50
2.45
2.40
2.35
2.30
2.25
2.20
2.15
2.10
2.05
2.00
3.36
3.35
3.34
3.33
3.32
3.31
3.30
2.1
2.0
1.9
1.8
1.7
1.6
1.5
3.5
-50
-50
Switching Frequency vs. Temperature
3.7
Output Voltage vs. Input Voltage
-25
-25
3.9
V
IN
UVLO vs. Temperature
4.1
0
0
Temperature (°C)
Temperature (°C)
Input Voltage (V)
4.3
25
25
Rising
Falling
DS8055-03 March 2011
4.5
V
I
OUT
IN
50
50
I
4.7
= 5V, V
OUT
= 0.3A, f
= 0A, V
4.9
75
75
OUT
SW
V
5.1
OUT
= 3.3V
OUT
= 1.8MHz
100
100
= 3.3V
= 3.3V
5.3
125
5.5
125