MIC7400_15 Datasheet, PDF (13/68 Pages) Micrel Semiconductor – Configurable PMIC, Five-Channel Buck Regulator Plus One-Boost with HyperLight Load® and I2C Control

Micrel, Inc.
MIC7400
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 3 for IPROG Settings
See Table 3 for IPROG Settings
See Table 3 for IPROG Settings
See Table 3 for IPROG Settings
See Table 3 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 3, 2015
13
Revision 2.0