MIC4685-5.0BR Micrel Inc, MIC4685-5.0BR Datasheet - Page 6

• Manufacturer Part Number: MIC4685-5.0BR
• Description: IC REG BUCK 3A 5.0V SPAK-7
• Manufacturer: Micrel Inc
• Series: SuperSwitcher™r
• Type: Step-Down (Buck)r

Specifications of MIC4685-5.0BR

• Internal Switch(s): Yes
• Synchronous Rectifier: No
• Number Of Outputs: 1
• Voltage - Output: 5V
• Current - Output: 3A
• Frequency - Switching: 200kHz
• Voltage - Input: 4 ~ 30 V
• Operating Temperature: -40°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: SPak-7
• Power - Output: 1.14W
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

Typical Characteristics
(TA = 25°C unless otherwise noted)
Micrel, Inc.
January 2010
100
90
80
70
60
50
40
30
20
10
90
80
70
60
50
40
30
20
10
0
0
0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0
0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0
V
IN
vs. Output Current
OUTPUT CURRENT (A)
vs. Output Current
OUTPUT CURRENT (A)
= 8V
V
V
IN
V
IN
IN
= 30V
= 30V
Efficiency
Efficiency
= 8V
Standard
Configuration
V
Standard
Configuration
V
OUT
V
OUT
IN
V
V
IN
IN
= 12V
= 1.8V
= 5.0V
= 24V
= 12V
350
300
250
200
150
100
90
80
70
60
50
40
30
20
10
50
0
0
0 2 4 6 8 10 12 14 16 18 20
0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0
Bootstrap Drive Current
V
V
vs. Output Current
OUTPUT CURRENT (A)
IN
vs. Input Voltage
IN
INPUT VOLTAGE (V)
= 16V
= 5V
Efficiency
V
IN
6
Bootstrap
Configuration
V
= 12V
OUT
V
V
IN
FB
= 12V
= 1.8V
= 1.5V
6.3
6.2
6.1
5.9
5.8
5.7
12
10
6
8
6
4
2
0
0
0
5 10 15 20 25 30 35 40
Minimum Duty Cycle
5
Quiescent Current
vs. Input Voltage
vs. Input Voltage
INPUT VOLTAGE (V)
INPUT VOLTAGE (V)
10
15
V
OUT
20
M9999-012610
V
= 1.8V
EN
25
= 5V
MIC4685
30