MAX15023ETG-T Datasheet, PDF (3/28 Pages) Maxim Integrated Products – Wide 4.5V to 28V Input, Dual-Output Synchronous Buck Controller

MAX15023
Wide 4.5V to 28V Input, Dual-Output
Synchronous Buck Controller
ELECTRICAL CHARACTERISTICS (continued)
(V_IN = 12V, R_T = 33kΩ, C_VCC = 4.7µF, C_IN = 1µF, T_A = -40°C to +85°C, unless otherwise noted. Typical values are at T_A = +25°C.)
(Note 3)
PARAMETER
SYMBOL
CONDITIONS
MIN TYP MAX
UNITS
FB_ to COMP_
Transconductance
g_m
I_COMP = ±40µA
650 1200 1900
µS
Amplifier Open-Loop Gain
Amplifier Unity-Gain Bandwidth
COMP_ Swing (High)
COMP_ Swing (Low)
COMP_ Source/Sink Current
ENABLE (EN_)
EN_ Input High
EN_ Input Hysteresis
EN_ Input Leakage Current
OSCILLATOR
Switching Frequency
Switching Frequency
Adjustment Range
No load
No load at COMP_
I_{COMP_} | I_{COMP_} |, V_{COMP_} = 1.5V
V_{EN_H}
V_{EN_HYS}
I_{LEAK_EN_}
EN_ rising
f_SW Each converter
(Note 4)
80
10
2.4
0.6
45
80
120
1.15
-250
1.20
150
1.25
+250
460
500
540
200
1000
dB
MHz
V
V
µA
V
mV
nA
kHz
kHz
PWM Ramp Peak-to-Peak
Amplitude
V_RAMP
1.42
V
PWM Ramp Valley
Phase Shift Between
Channels
V_VALLEY
From DH1 to DH2 rising edges
0.72
V
180
Degrees
Minimum Controllable On-Time
Maximum Duty Cycle
OUTPUT DRIVERS
DH_ On-Resistance
DL_ On-Resistance
DH_ Peak Current
DL_ Peak Current
60
100
ns
86
87.5
%
Low, sinking 100mA, V_{BST_} - V_{LX_} = 5V
1
Ω
High, sourcing 100mA, V_{BST_} - V_{LX_} = 5V
1.2
Low, sinking 100mA, V_CC = 5.2V
0.75
Ω
High, sourcing 100mA, V_CC = 5.2V
1.4
C_LOAD = 10nF
Sinking
Sourcing
3
A
2
C_LOAD = 10nF
Sinking
Sourcing
3
A
2
DH_, DL_ Break-Before-Make
Time (Dead Time)
15
ns
SOFT-START
Soft-Start Duration
2048
Switching
cycles
Reference Voltage Steps
64
Steps
Maxim Integrated
3