MAX15014_07 Datasheet, PDF (5/26 Pages) Maxim Integrated Products – 1A, 4.5V to 40V Input Buck Converters with 50mA Auxiliary LDO Regulators

1A, 4.5V to 40V Input Buck Converters with
50mA Auxiliary LDO Regulators
ELECTRICAL CHARACTERISTICS (continued)
(V_{IN_SW} = V_{IN_LDO} = V_DRAIN = 14V, V_{EN_SYS} = V_{EN_SW} = 2.4V, V_REG = V_DVREG, V_SYNC = V_{SET_LDO} = V_SGND = V_PGND = 0V, C_REG =
1µF, C_{IN_SW} = 0.1µF, C_{IN_LDO} = 0.1µF, C_{LDO_OUT} = 10µF, C_DRAIN = 0.22µF, T_A = T_J = -40°C to +125°C, unless otherwise noted.
Typical values are at T_A = +25°C.) (Note 1)
PARAMETER
SYMBOL
CONDITIONS
MIN TYP MAX UNITS
Output Current
I_OUT V_IN = 6V (Note 2)
65
200
mA
I_{LDO_OUT} = 100µA
4.90
5
5.06
Output Voltage
I_{LDO_OUT} = 1mA
SET_LDO = SGND,
4.90
5
5.06
MAX1501_A
6V ≤ V_{IN_LDO} ≤ 40V,
I_{LDO_OUT} = 1mA
4.85
5
5.15
1mA ≤ I_OUT ≤ 50mA, _4.85
5
5.15
V_{IN_LDO} = 14V
V_{LDO_OUT}
V
I_{LDO_OUT} = 100µA
3.22
3.3
3.35
I_{LDO_OUT} = 1mA
3.22
3.3
3.35
SET_LDO = SGND,
MAX1501_B
6V ≤ V_{IN_LDO} ≤ 40V,
3.2
3.3
3.4
I_{LDO_OUT} = 1mA
1mA ≤ I_{LDO_OUT} ≤
50mA, V_{IN_LDO} =
14V
3.2
3.3
3.4
Adjustable Output Voltage Range
Dropout Voltage
Startup Response Time
SET_LDO Reference Voltage
Minimum SET_LDO Threshold
SET_LDO Input Leakage Current
Power-Supply Rejection Ratio
Short-Circuit Current
V_ADJ
∆V_DO
V_{SET_LDO}
I_{SET_LDO}
PSRR
I_SC
V_{SET_LDO} > 0.25V
V_{IN_LDO} = 5V,
MAX1501_A
I_OUT = 10mA
I_OUT = 50mA
V_{IN_LDO} = 4.0V,
MAX1501_B
I_OUT = 10mA
I_OUT = 50mA
From EN_SYS high to LDO_OUT rise,
R_L = 500Ω, SET_LDO = SGND
(Note 3)
V_{SET_LDO} = 11V
I_OUT = 10mA, f = 100Hz, 500mV_P-P,
V_{LDO_OUT} = 5V
I_OUT = 10mA, f = 1MHz, 500mV_P-P,
V_{LDO_OUT} = 5V
1.5
11.0
V
0.6
0.82
V
0.1
0.4
400
µs
1.220 1.241 1.265
V
185
mV
0.5
100
nA
78
dB
24
125
185
300
mA
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