MIC7400_15 Datasheet, PDF (16/68 Pages) Micrel Semiconductor – Configurable PMIC, Five-Channel Buck Regulator Plus One-Boost with HyperLight Load® and I2C Control

Micrel, Inc.
Typical Characteristics (Continued)
Buck Output Voltage (1.0V)
vs. Output Current
1.001
1.000
1.000
0.999
0.999
0.998
0.0001
3.3V
5V
T_A = 25°C
0.001
0.01
0.1
1
OUTPUT CURRENT (A)
Buck Output Voltage Regulation
vs. Output Current
0.20%
0.15%
0.10%
0.05%
0.00%
-0.05%
-0.10%
-0.15%
-0.20%
0.0001
3.3V
5V
T_A = 25°C
0.001
0.01
0.1
1
OUTPUT CURRENT (A)
3.3
3.1
2.9
2.7
2.5
2.3
2.1
1.9
0
Dropout Output Voltage
vs. Output Current
V_IN = 3.3V
V_OUT = 3.3V
L = 2.2µH
DCR = 116mΩ
SAMSUNG
CIG22H2R2MNE
T_A = 25⁰C
1
2
3
OUTPUT CURRENT (A)
V_IN Operating Supply Current
vs. Input Voltage
300
250
200
150
100
50
0
0.0
I_OUT = 0A SWITCHING
R_PG = OPEN
R_POR = OPEN
T_A = 25⁰C
1.0
2.0
3.0
4.0
5.0
INPUT VOLTAGE (V)
Current-Limit Threshold
vs. Output Voltage
6
5
5.1A
4.6A
4.1A
4
3.6A
3.1A
3
2.6A
2.1A
2
1.6A
1.1A
1
0
0
1
2
3
4
5
6
OUTPUT VOLTAGE (V)
Output Current Limit
vs. Output Voltage
6
5
5.1A
4.6A
4.1A
4
3.6A
3.1A
3
2.6A
2.1A
2
1.6A
1.1A
1
0
0
1
2
3
4
5
6
OUTPUT VOLTAGE (V)
MIC7400
0.035%
0.030%
0.025%
0.020%
0.015%
0.010%
0.005%
0.000%
2
Buck Line Regulation
vs. Input Voltage
I_OUT = 1A
T_A = 25°C
3
4
5
6
INPUT VOLTAGE (V)
Buck 2 Switching Frequency
vs. Input Voltage
1.5
1.4
1.3
1.2
1.1
1.0
V_OUT2 = 1.1V
0.9
I_OUT2 = 0.5A
T_A = 25°C
0.8
0.0 1.0 2.0 3.0 4.0 5.0 6.0
INPUT VOLTAGE (V)
Programmed Current Limit
vs. Measured Current Limit
6
V_IN = 5.0V
5
V_OUT = 1.05V
4
3
2
1
0
0
1
2
3
4
5
6
PROGRAMMED CURRENT LIMIT (A)
March 3, 2015
16
Revision 2.0