Owner manual

MAX15038
4A, 2MHz Step-Down Regulator
with Integrated Switches
_______________________________________________________________________________________ 3
ELECTRICAL CHARACTERISTICS (continued)
(V
IN
= V
EN
= 5V, C
VDD
= 2.2µF, T
A
= T
J
= -40°C to +85°C, typical values are at T
A
= +25°C, circuit of Figure 1, unless otherwise
noted.) (Note 3)
PARAMETER CONDITIONS MIN TYP MAX UNITS
ERROR AMPLIFIER
COMP Clamp Voltage, High V
IN
= 2.9V to 5V, V
FB
= 0.5V, V
REFIN
= 0.6V 2 V
COMP Clamp Voltage, Low V
IN
= 2.9V to 5V, V
FB
= 0.7V, V
REFIN
= 0.6V 0.7 V
COMP Slew Rate V
FB
step from 0.5V to 0.7V in 10ns 1.6 V/µs
COMP Shutdown Resistance
From COMP to GND, V
IN
= 3.3V, V
COMP
= 100mV,
V
EN
= V
SS
= 0
6 Ω
Internally Preset Output Voltage
Accuracy
V
REFIN
= V
SS
, MODE = GND -1 +1 %
FB Set Point Value CTL1 = CTL2 = GND, MODE = GND 0.594 0.6 0.606 V
FB to OUT Resistor All VID settings except CTL1 = CTL2 = GND 5.5 8 10.5 kΩ
Open-Loop Voltage Gain 115 dB
Error-Amplifier Unity-Gain
Bandwidth
28 MHz
Error-Amplifier Common-Mode
Input Range
V
DD
= 2.9V to 3.5V 0 V
DD
- 2 V
V
FB
= 0.7V, sinking 1
Error-Amplifier Maximum Output
Current
V
COMP
= 1V,
V
REFIN
= 0.6V
V
FB
= 0.5V, sourcing -1
mA
FB Input Bias Current CTL1 = CTL2 = GND -125 nA
CTL_
V
CTL_
= 0 -7.2
CTL_ Input Bias Current
V
CTL_
= V
DD
+7.2
µA
Low, falling 0.8
Float V
DD
/2
CTL_ Input Threshold
High, rising
V
DD
-
0.8
V
Hysteresis All VID transitions 50 mV
REFIN
REFIN Input Bias Current V
REFIN
= 0.6V -185 nA
REFIN Offset Voltage V
REFIN
= 0.9V, FB shorted to COMP -4.5 +4.5 mV
LX (All Pins Combined)
V
IN
= V
BST
- V
LX
= 3.3V 42
LX On-Resistance, High-Side I
LX
= -2A
V
IN
= V
BST
- V
LX
= 5V 31 54
mΩ
V
IN
= 3.3V 30
LX On-Resistance, Low-Side I
LX
= 2A
V
IN
= 5V 24 42
mΩ
High-side sourcing 5.7 7
Low-side sinking 7LX Current-Limit Threshold
Zero-crossing current threshold, MODE = V
DD
0.2
A
V
LX
= 0 -0.01
LX Leakage Current V
IN
= 5V, V
EN
= 0
V
LX
= 5V +0.01
µA