RT8009-12GB Richtek USA Inc, RT8009-12GB Datasheet - Page 6

• Manufacturer Part Number: RT8009-12GB
• Description: IC DCDC CONV STP-DN SYNC SOT23-5
• Manufacturer: Richtek USA Inc
• Type: Step-Down (Buck), PWMr

Specifications of RT8009-12GB

• Internal Switch(s): Yes
• Synchronous Rectifier: Yes
• Number Of Outputs: 1
• Voltage - Output: 1.2V
• Current - Output: 600mA
• Frequency - Switching: 1.25MHz
• Voltage - Input: 2.5 V ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: SC-74A, SOT-753
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

www.richtek.com
6
RT8009
Typical Operating Characteristics
1.810
1.805
1.800
1.795
1.790
1.785
1.780
1.775
1.770
1.26
1.24
1.22
1.20
1.18
1.16
1.14
100
90
80
70
60
50
40
30
20
10
0
0.01
2.5
0.1 0.15 0.2 0.25 0.3 0.35 0.4 0.45 0.5 0.55 0.6
V
V
V
V
V
IN
IN
OUT
OUT
OUT
2.8
= 3.3V
= 5V
= 1.8V
= 1.8V
= 1.8V
0.11
Frequency vs. Input Voltage
Efficiency vs. Load Current
3.1
3.4
0.21
Load Regulation
Load Current (A)
Input Voltage (V)
Load Current (A)
V
V
3.7
IN
IN
= 5.5V
= 2.5V
0.31
4
4.3
0.41
4.6
V
IN
4.9
= 3.3V
0.51
5.2
0.61
5.5
2.50
2.25
2.00
1.75
1.50
1.25
1.00
0.75
0.50
0.25
0.00
1.26
1.24
1.22
1.20
1.18
1.16
1.14
1.12
1.10
100
90
80
70
60
50
40
30
20
10
0
2.5
-50
2.5
V
V
V
OUT
IN
OUT
2.8
2.8
= 3.3V, V
= 1.8V
-25
Current Limit vs. Input Voltage
= 1.8V
Frequency vs. Temperature
Efficiency vs. Input Voltage
3.1
3.1
I
OUT
OUT
3.4
= 300mA
3.4
0
Temperature (°C)
Input Voltage (V)
Input Voltage (V)
= 1.8V
3.7
3.7
25
DS8009-06 February 2011
4
4
I
OUT
50
4.3
4.3
= 600mA
4.6
4.6
75
4.9
4.9
100
5.2
5.2
125
5.5
5.5