MAX15034 Datasheet, PDF (4/25 Pages) Maxim Integrated Products – Configurable, Single-/Dual-Output, Synchronous Buck Controller for High-Current Applications

Configurable, Single-/Dual-Output, Synchronous
Buck Controller for High-Current Applications
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
-3dB Bandwidth
SYMBOL
f_-3dB
CSP_ Input Bias Current
I_CSA(IN)
CURRENT-ERROR AMPLIFIER (CEA_)
Transconductance
g_m
Open-Loop Gain
A_VOL(CEA)
VOLTAGE-ERROR AMPLIFIER (EAOUT_)
Open-Loop Gain
A_VOL(EA)
Unity-Gain Bandwidth
f_UGEA
EAN_ Input Bias Current
I_BIAS(EA)
Error-Amplifier Output Clamping
High Voltage
V_{CLMP_HI (EA)}
CONDITIONS
V_{CSP_} = 5.5V, sinking
V_{CSP_} = 0V, sourcing
No load
V_{EAN_} = 2.0V
With respect to V_CM
MIN
TYP MAX UNITS
4
MHz
120
μA
30
550
μS
50
dB
70
dB
3
MHz
100
nA
1
V
Error-Amplifier Output Clamping
Low Voltage
V_{CLMP_LO (EA)} With respect to V_CM
-0.234
V
EN_ INPUTS
EN_ Input High Voltage
EN_ Hysteresis
V_ENH
EN rising
1.2
1.222 1.245
V
0.05
EN_ Input Leakage Current
Startup Delay Time to OUT_
MODE INPUT
I_EN
t_{START_DELAY}
From EN_ rising to V_{OUT_} rising
-200
+200
nA
1
ms
MODE Logic-High Threshold
MODE Logic-Low Threshold
MODE Input Pulldown
PREBIASED OUTPUT
V_{MODE_H}
V_{MODE_L}
I_PULLDWN
2.4
V
0.8
V
5
μA
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
Thermal Shutdown Hysteresis
T_SHDN
T_HYST
160
°C
10
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.
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