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MIC4690YM-TR

P1-P3P4-P6P7-P9P10-P12
MIC4690 Micrel
MIC4690 4 April 2005
Test Circuit
SW
18µH
VIN
FB
GND
SHDN
Device Under Test
+12V
SOP-8 5–8
4
32
1
I
Current Limit Test Circuit
Shutdown Input Behavior
OFF
ON
GUARANTEED
OFF
TYPICAL
OFF
GUARANTEED
ON
TYPICAL
ON
0.8V
1.25V0V 1.5V V
IN(max)
2V
Shutdown Hysteresis
April 2005 5 MIC4690
MIC4690 Micrel
Typical Characteristics
1.223
1.225
1.227
1.229
1.231
1.233
1.235
1.237
1.239
1.241
1.243
-40 -20 0 20 40 60 80 100120140
VOLTAGE (V)
TEMPERTURE (°C)
Reference Voltage
vs. Temperature
V
IN
= 12V
V
OUT
= 5V
I
OUT
= 100mA
7.6
7.7
7.8
7.9
8
8.1
8.2
8.3
8.4
8.5
8.6
-40 -20 0 20 40 60 80 100120140
CURRENT (mA)
TEMPERATURE (°C)
Quiescent Current
vs. Temperature
V
IN
= 12.0V
V
OUT
= 5.0V
I
OUT
= 0
0
10
20
30
40
50
60
70
80
0 5 10 15 20 25 30 35 40
EFFICIENCY (%)
INPUT VOLTAGE (V)
Efficiency
vs. Input Volta
g
e
V
OUT
= 5V
I
OUT
= 1A
0
100
200
300
400
500
600
-50 0 50 100 150
FREQUENCY (kHz)
Temperature (°C)
Frequency vs.
Temperature
V
IN
= 12V
V
OUT
= 5V
I
OUT
= 100mA
0
50
100
150
200
250
300
-50 0 50 100 150
FREQUENCY (kHz)
Temperature (°C)
Frequency Foldback
vs. Temperature
V
IN
= 12V
V
OUT
= 5V
I
OUT
= 100mA
5.000
5.005
5.010
5.015
5.020
5.025
0 0.2 0.4 0.6 0.8 1 1.2 1.4
OUTPUT VOLTAGE (V)
OUTPUT CURRENT (A)
Load Re
g
ulation
V
IN
= 12V
V
OUT
= 5V
4.96
4.98
5.00
5.02
5.04
5.06
0 5 10 15 20 25 30 35 40
OUTPUT VOLTAGE (V)
INPUT VOLTAGE (V)
Line Re
g
ulation
V
IN
= 12V
V
OUT
= 5V
I
OUT
= 500mA
0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
-40 -20 0 20 40 60 80 100120140
SHUTDOWN CURRENT (µA)
TEMPERATURE (°C)
Shutdown Current
vs. Temperature
V
SHDN
= V
IN
= 12V
V
OUT
= 5V
0
0.2
0.4
0.6
0.8
1
1.2
1.4
1.6
-40 0 40 80 120 160
SHUTDOWN PIN VOLTAGE (V)
TEMPERATURE (°C)
Shutdown Hysteresis
vs. Temperature
ON
OFF
V
IN
= 12.0V
V
OUT
= 5.0V
I
OUT
= 100mA
68
70
72
74
76
78
80
0 0.2 0.4 0.6 0.8 1 1.2 1.4
EFFICIENCY (%)
OUTPUT CURRENT (A)
Efficiency vs.
Output Current
V
IN
= 12.0V
V
OUT
= 5.0V
MIC4690 Micrel
MIC4690 6 April 2005
Load Transient
TIME (100µs/div)
V
OUT
(100mV/div)
I
OUT
(1A/div)
V
IN
= 12V
V
OUT
= 5V
0A
100mV
1.5A
Functional Characteristics
0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
0 5 10 15 20 25 30 35
CONTINUOUS OUTPUT CURRENT (A)
INPUT VOLTAGE (V)
SOA for MIC4690*
V
OUT
= 5V
T
A
= 50°C
T
J
= 125°C
T
A
= 25°C
Switching Frequency Foldback
TIME
Normal
Operation
Short
Circuit
Operation
V
SW
(SHORTED)
12V IN, 0V OUT
V
SW
(NORMAL)
12V IN, 5V/1A OUT
500kHz
190kHz
SWIN
FB
GND
SHDN
D1
1N4148
2.2nF
82‰
MIC4690BM
5678
3
Snubber Circuit
P1-P3P4-P6P7-P9P10-P12

MIC4690YM-TR

Mfr. #:
Buy MIC4690YM-TR
Manufacturer:
Microchip Technology / Micrel
Description:
Switching Voltage Regulators 500KHz Simple Buck Regulator
Lifecycle:
New from this manufacturer.
Delivery:
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Payment:
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