MAX15034
Configurable, Single-/Dual-Output, Synchronous
Buck Controller for High-Current Applications
4 _______________________________________________________________________________________
ELECTRICAL CHARACTERISTICS (continued)
(V
IN
= V
REG
= V
DD
= V
EN_
= +5V, T
A
= T
J
= T
MIN
to T
MAX
, unless otherwise noted, circuit of Figure 6. Typical values are at T
A
= +25°C.)
(Note 2)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
-3dB Bandwidth f
-3dB
4 MHz
V
CSP_
= 5.5V, sinking 120
CSP_ Input Bias Current I
CSA(IN)
V
CSP_
= 0V, sourcing 30
µA
CURRENT-ERROR AMPLIFIER (CEA_)
Transconductance g
m
550 µS
Open-Loop Gain A
VOL(CEA)
No load 50 dB
VOLTAGE-ERROR AMPLIFIER (EAOUT_)
Open-Loop Gain A
VOL(EA)
70 dB
Unity-Gain Bandwidth f
UGEA
3 MHz
EAN_ Input Bias Current I
BIAS(EA)
V
EAN_
= 2.0V 100 nA
Error-Amplifier Output Clamping
High Voltage
V
C LM P_H I (E A)
With respect to V
CM
1V
Error-Amplifier Output Clamping
Low Voltage
V
C LM P_LO
EA
With respect to V
CM
-0.234 V
EN_ INPUTS
EN_ Input High Voltage V
ENH
EN rising 1.2 1.222 1.245
EN_ Hysteresis 0.05
V
EN_ Input Leakage Current I
EN
-200 +200 nA
Startup Delay Time to OUT_ t
START_DELAY
From EN_ rising to V
OUT_
rising 1 ms
MODE INPUT
MODE Logic-High Threshold V
MODE_H
2.4 V
MODE Logic-Low Threshold V
MODE_L
0.8 V
MODE Input Pulldown I
PULLDWN
5µA
PREBIASED OUTPUT
Peak Sink Current-Limit
Threshold during Reference
Soft-Start
V
CSP_
- V
CSN_
-2.1 mV
Digital Ramp Period for
Stepping Peak Sink Current
Limit after Reference Soft-Start
448
Clock
cycles
THERMAL SHUTDOWN
Thermal Shutdown T
SHDN
160
Thermal Shutdown Hysteresis T
HYST
10
°C
Note 2: The device is 100% production tested at T
A
= T
J
= +125°C. Limits at T
A
= -40°C and T
A
= +25°C are guaranteed by design.
Note 3: The internal reference voltage accuracy is measured at the negative input of the error amplifiers (EAN_). Output voltage
accuracy must include external resistor-divider tolerances.
