MIC2179YSM Micrel Inc, MIC2179YSM Datasheet - Page 5

• Manufacturer Part Number: MIC2179YSM
• Description: IC,SMPS CONTROLLER,CURRENT-MODE,SSOP,20PIN,PLASTIC
• Manufacturer: Micrel Inc
• Type: Step-Down (Buck)r

Specifications of MIC2179YSM

• Internal Switch(s): Yes
• Synchronous Rectifier: Yes
• Number Of Outputs: 1
• Voltage - Output: 1.25 ~ 16.5 V
• Current - Output: 1.5A
• Frequency - Switching: 200kHz
• Voltage - Input: 4.5 ~ 16.5 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 20-SSOP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Power - Output: -
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 576-1067

Typical Characteristics
June 2009
205
200
195
190
185
180
175
5.030
5.020
5.010
5.000
4.990
4.980
4.970
5.5
5.3
5.1
4.9
4.7
4.5
4.3
4.1
3.9
3.7
3.5
12
10
8
6
4
2
0
-60 -30
2
-60 -30
-60 -30
SWITCHING
4
OUTPUT
Oscillator Frequency
MIC2179-5.0
INPUT VOLTAGE (V)
TEMPERATURE (°C)
vs. Temperature
TEMPERATURE (°C)
Supply-Current
vs. Temperature
6
Reference Voltage
Current Limit
TEMPERATURE (°C)
vs. Temperature
0
PWM-Mode
0
8
0
30 60 90 120 150
30 60 90 120 150
10 12 14 16 18
30 60 90 120 150
1.252
1.250
1.248
1.246
1.244
1.242
1.240
1.238
19.0
18.5
18.0
17.5
17.0
16.5
16.0
350
300
250
200
150
100
95
90
85
80
75
70
65
60
50
10
0
-60 -30
2
-60 -30
Skip- and PWM-Mode
PWM
5.4V
OUTPUT CURRENT (mA)
4
MIC2179 [adj.]
5.4V
Skip
Error-Amplifier Gain
High-Side Switch
INPUT VOLTAGE (V)
TEMPERATURE (°C)
Reference Voltage
vs. Temperature
On-Resistance
6
TEMPERATURE (°C)
vs. Temperature
Efficiency
0
0
8
30 60 90 120 150
PWM
8.4V
30 60 90 120 150
10 12 14 16 18
100
5
8.4V
Skip
125°C
85°C
25°C
0°C
600
120
100
400
350
300
250
200
150
100
3.320
3.315
3.310
3.305
3.300
3.295
3.290
3.285
3.280
80
60
40
20
50
0
0
-60 -30
Feedback Input Bias Current
2
-60 -30
4
MIC2179-3.3
TEMPERATURE (°C)
Low-Side Switch
INPUT VOLTAGE (V)
vs. Temperature
Reference Voltage
On-Resistance
6
TEMPERATURE (°C)
vs. Temperature
0
0
8
30 60 90 120 150
30 60 90 120 150
10 12 14 16 18
125°C
85°C
25°C
0°C
M9999-063009