MIC4680-3.3YM Micrel Inc, MIC4680-3.3YM Datasheet - Page 5

• Manufacturer Part Number: MIC4680-3.3YM
• Description: IC REG BUCK 1A 3.3V 8SOIC
• Manufacturer: Micrel Inc
• Series: SuperSwitcher™r
• Type: Step-Down (Buck)r

Specifications of MIC4680-3.3YM

• Internal Switch(s): Yes
• Synchronous Rectifier: No
• Number Of Outputs: 1
• Voltage - Output: 3.3V
• Current - Output: 1A
• Frequency - Switching: 200kHz
• Voltage - Input: 4 ~ 34 V
• Operating Temperature: -40°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: 8-SOIC (3.9mm Width)
• Primary Input Voltage: 12V
• No. Of Outputs: 1
• Output Voltage: 3.3V
• Output Current: 1.8A
• No. Of Pins: 8
• Operating Temperature Range: -40°C To +125°C
• Supply Voltage Range: 4V To 34V
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Power - Output: -
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant
• Other names: 576-1220

Typical Characteristics
Micrel, Inc.
March 2008
5.06
5.05
5.04
5.03
5.02
5.01
5.00
4.99
4.98
4.97
4.96
220
210
200
190
180
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
80
70
60
50
40
30
20
10
0
0
-50 -25
-50 -25
0
0
I
V
V
0.2 0.4 0.6 0.8 1.0 1.2 1.4
OUT
IN
SHDN
OUTPUT CURRENT (A)
5
12V
Shutdown Current
TEMPERATURE (°C)
= 12V
TEMPERATURE (°C)
vs. Temperature
INPUT VOLTAGE (V)
Line Regulation
= 1.0A
Frequency vs.
0
3.3V Output
10 15 20
Temperature
0
= V
Efficiency
24V
IN
25
25
50
6V
50
75 100 125
75 100 125
25 30 35
1.242
1.240
1.238
1.236
1.234
1.232
1.230
1.228
5.04
5.02
5.00
4.98
4.96
90
80
70
60
50
40
30
20
10
6
5
4
3
2
1
0
0
0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8
0
-50 -25 0
0
V
0.2 0.4 0.6 0.8 1.0 1.2 1.4
0.2 0.4 0.6 0.8 1.0 1.2 1.4
IN
OUTPUT CURRENT (A)
12V
OUTPUT CURRENT (A)
OUTPUT CURRENT (A)
= 12V
Feedback Voltage
Load Regulation
Characteristic
TEMPERATURE (°C)
Current Limit
vs. Temperature
5V Output
Efficiency
24V
25 50 75 100 125 150
5
7V
V
V
V
V
I
OUT
IN
OUT
IN
OUT
= 12V
= 12V
= 1A
= 5V
= 5V
100
202
201
200
199
198
197
196
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
100
80
60
40
20
90
80
70
60
50
40
30
20
10
0
0
0
-50 -25
0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4
0
0
V
V
I
LOAD
IN
OUT
5
5
OUTPUT CURRENT (A)
Saturation Voltage
Shutdown Current
SUPPLY VOLTAGE (V)
= 12V
TEMPERATURE (°C)
15V
vs. Temperature
vs. Input Voltage
INPUT VOLTAGE (V)
Supply Voltage
= 5V
= 1A
Frequency vs.
10 15
10 15
0
12V Output
Efficiency
25
24V
50
20 25 30 35
20 25 30 35
M9999-032808
75 100 125
MIC4680