MAX15022_11 Datasheet, PDF (4/28 Pages) Maxim Integrated Products – Dual, 4A/2A, 4MHz, Step-Down DC-DC Regulator with Dual LDO Controllers

Dual, 4A/2A, 4MHz, Step-Down DC-DC
Regulator with Dual LDO Controllers
ELECTRICAL CHARACTERISTICS (continued)
(V_AVIN = V_{PVIN_} = V_{DVDD_} = 3.3V, V_{PGND_} = V_SGND = 0V, R_T = 25kΩ, and T_A = T_J = -40°C to +125°C, unless otherwise noted.
Typical values are at T_A = +25°C.) (Note 3)
PARAMETER
ENABLE/SEL
EN_ Threshold
EN_ Hysteresis
EN_ Input Current
SEL High Threshold
SEL Low Threshold
SEL Input Bias Current
OSCILLATOR
Switching Frequency Range
Oscillator Accuracy
Phase Shift Between Regulators
RT Current
RT Voltage Range
Minimum Controllable On-Time
Minimum Controllable Off-Time
PWM Ramp Amplitude
PWM Ramp Valley
THERMAL SHUTDOWN
Thermal Shutdown Temperature
Thermal Shutdown Hysteresis
SYMBOL
CONDITIONS
MIN TYP MAX UNITS
V_{EN_} rising
Present only during startup
1.207 1.225 1.243
V
0.12
V
-2.5
+2.5
µA
0.85 x V_AVIN
V
-100
0.2 x V_AVIN
V
+100
µA
f_SW
f_SW = 4MHz x [V_RT(V)/1.067(V)] (Note 4)
4000
kHz
f_SW ≤ 1500kHz
f_SW > 1500kHz
-6
+6
%
-10
+10
180
Degrees
0 < V_RT < 1.067V
31.30 32.00 32.58
µA
V_RT
0.130
1.067
V
60
ns
60
ns
V_AVIN/4
V
0.3
V
Temperature rising
+160
°C
15
°C
Note 3: Specifications are 100% production tested at T_A = +25°C and T_A = +125°C. Maximum and minimum specifications over
temperature are guaranteed by design.
Note 4: When operating with V_AVIN = 2.5V, the maximum operating frequency should be derated to 3MHz.
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