MIC7401 Datasheet, PDF (13/68 Pages) Micrel Semiconductor – Configurable PMIC, Five-Channel Buck Regulator plus One-Boost with HyperLight Load®, I2C Control, and Enable

Micrel, Inc.
MIC7401
Electrical Characteristics⁽⁷⁾ (Continued)
VIN = AVIN = PVIN(1-6) = 5.0V; VOUT1 = 1.8V; VOUT2 = 1.1V; VOUT3 = 1.8V; VOUT4 = 1.05V; VOUT5 = 1.25V; VOUT6 = 12V (refer to the
Evaluation Board Schematic for component values). TA = 25°C, unless otherwise noted. Bold values indicate −40°C ≤ TJ ≤ +125°C.
Parameter
Conditions
Min.
Typ.
Max.
Unit
Buck Current Limit (OUT1-OUT5)
Buck 1 Current Limit Threshold
Buck 2 Current Limit Threshold
Buck 3 Current Limit Threshold
Buck 4 Current Limit Threshold
Buck 5 Current Limit Threshold
Gross High-Side Current Limit [1-5]
See Table 25 for IPROG Settings
See Table 25 for IPROG Settings
See Table 26 for IPROG Settings
See Table 26 for IPROG Settings
See Table 27 for IPROG Settings
With Respect to Buck [x] Current Limit
3.075
4.1
5.125
A
3.075
4.1
5.125
A
3.075
4.1
5.125
A
4.88
6.1
7.32
A
3.075
4.1
5.125
A
150
%
Zero Cross Threshold
Boost (VOUT6)
Boost Output Voltage (VOUT6)
Typical Output Voltage Accuracy ⁽¹¹⁾
Output Voltage Accuracy ⁽¹¹⁾
Zero crossing detector
Includes Load, Line, and Reference
0
mV
-1.5%
-1%
1.5%
%
1%
%
Load Regulation
Line Regulation
VOUT6 Discharge Current
Boost Soft-Start Step Duration
Soft-Start 6 LSB ^{(10, 12)}
IOUT6 = 1.0mA to 200mA
VIN = 2.4V to 5.5V; IOUT6 = 10mA
VIN = 3.3V; VOUT6 = 12V
0.2
%
0.2
%
111
148
185
mA
3.84
4
4.16
µs/step
Boost Internal MOSFETs
Low-Side On-Resistance
Low-Side On-Resistance
Boost Disconnect MOSFETs
VIN = 3.3V; ISW1 = −100mA
VIN = 5.0V; ISW1 = −100mA
160
mΩ
140
mΩ
Disconnect Switch On-Resistance
Disconnect Switch Current Limit
IPVIN6O = 100mA; VIN = 3.3V
90
mΩ
5
A
Boost Switching Frequency
Switching Frequency (PWM Mode)
1.92
2
2.08
MHz
Minimum Duty Cycle
35
40
45
%
Maximum Duty Cycle
80
85
90
%
Boost Current Limit
NMOS Current-Limit Threshold
2.24
A
March 16, 2015
13
Revision 1.0