MIC23603 Datasheet, PDF (5/19 Pages) Micrel Semiconductor – 4MHz PWM 6A Buck Regulator

Micrel Inc.
Typical Characteristics (Continued)
Undervoltage Lockout vs.
Temperature
2.60
UVLO ON
2.50
2.40
UVLO OFF
2.30
2.20
2.10
2.00
-40 -20
0 20 40 60 80 100 120
TEMPERATURE (°C)
PGOOD Delay Time vs.
Input Voltage
45
40
PG RISING
35
30
25
20
PG FALLING
15
10
5 ^VOUT ^{= 1.2V}
0
2.5
3
3.5
4
4.5
5
5.5
INPUT VOLTAGE (V)
MIC23603
PGOOD Thresholds vs.
Input Voltage
95
PG RISING
90
85
80
75
PG FALLING
70
V_OUT = 1.2V
65
2.5
3
3.5
4
4.5
5
5.5
INPUT VOLTAGE (V)
1000000
100000
10000
1000
100
10
1
1000
V_OUT Rise Time
vs. C_SS
V_IN = 3.6V
10000
100000
C_SS (pF)
1000000
Output Voltage vs.
Temperature
1.210
1.208
1.206
1.204
1.202
1.200
1.198
1.196
1.194
1.192
V_IN = 3.6 V
LOAD = 20mA
1.190
-40 -20
0 20 40 60 80 100 120
TEMPERATURE (°C)
25
24
23
22
21
20
19
18
17
16
15
2.5
Quiscent Current vs.
Input Voltage
V_OUT = 1.8V
L = 0.33µH
C_OUT = 2x47µF
3.0 3.5 4.0 4.5 5.0 5.5
INPUT VOLTAGE (V)
10000
Switching Frequency vs.
Load Current
1000
V_IN = 2.9V
100
10
V_IN = 3.6V
1
V_IN=5V
V_OUT = 1.8V
L = 0.33µH
C_OUT = 2x47µF
0.1
0.0001 0.001 0.01
0.1
1
10
LOAD CURRENT (A)
Feedback Voltage vs.
Temperature
0.65
0.64
0.63
0.62
0.61
0.60
0.59
-40
V_OUT = 1.2V
-20 0 20 40 60 80
TEMPERATURE (°C)
100 120
Current Limit vs.
Input Voltage
13
12
11
10
9
8
7
V_OUT = 1.8V
6
2.5
3.0
3.5
4.0
4.5
5.0
5.5
INPUT VOLTAGE (V)
November 5, 2013
5
Revision 1.1