MAX15009 Datasheet, PDF (4/23 Pages) Maxim Integrated Products – Automotive 300mA LDO Regulators with Switched Output and Overvoltage Protector

Automotive 300mA LDO Regulators with
Switched Output and Overvoltage Protector
ELECTRICAL CHARACTERISTICS (continued)
(V_IN = +14V, V_SGND = V_PGND = 0V, C_GATE = 6000pF, C_IN = 10µF (ESR < 1.5Ω), C_{OUT_LDO} = 22µF (ceramic), C_{OUT_SW} = 1µF,
V_{OUT_LDO} = 5V, C_T = open, 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
OUT_LDO Overvoltage
Protection Threshold
V_{OV_TH}
1mA sink from OUT_LDO
105
110 %V_{OUT_LDO}
OUT_LDO Overvoltage
Protection Sink Current
I_OV
V_{OUT_LDO} = V_OUT (nominal) x 1.15
8
19
mA
ENABLE/HOLD INPUTS
EN_LDO to EN_PROT Input
V_IH
Threshold Voltage
V_IL
2
V
0.7
EN_LDO, EN_PROT, EN_SW
Input Pulldown Current
I_{EN_PD}
EN_ is internally pulled low to SGND
1
µA
HOLD Input Threshold
Voltage
HOLD Input Pullup
RESET
V_IH
V_IL
I_{HOLD_PU}
HOLD is internally pulled high to
OUT_LDO
1.4
V
0.4
0.6
µA
RESET Voltage Threshold
HIGH
RESET Voltage Threshold
LOW
V_{OUT_LDO} to RESET Delay
CT Ramp Current
CT Ramp Threshold
RESET Output-Voltage Low
RESET Open-Drain
Leakage Current
V _{R ESET_H}
V_{RESET_L}
t_{RESET_FALL}
I_CT
V_{CT_TH}
V_OL
I_{LEAK_RESET}
RESET goes HIGH when rising
V_{OUT_LDO} crosses this threshold,
FB_LDO = SGND
RESET goes HIGH when rising
V_{FB_LDO} crosses this threshold
RESET goes LOW when falling
V_{OUT_LDO} crosses this threshold,
FB_LDO = SGND
RESET goes LOW when falling
V_{FB_LDO} crosses this threshold
V_{OUT_LDO} falling, 0.1V/µs
V_CT = 0V
V_CT rising
I_SINK = 1mA, output asserted
Output not asserted
90.0 92.5 95.0 %V_{OUT_LDO}
90.0 92.5 95.0 %V_{FB_LDO}
88
90
92 %V_{OUT_LDO}
88
1.50
1.190
90
19
2
1.235
92
2.35
1.270
0.1
%V_{FB_LDO}
µs
µA
V
V
150
nA
LOAD DUMP PROTECTOR (MAX15009 only)
FB_PROT Threshold
Voltage
V_{TH_PROT}
FB_PROT Threshold
Hysteresis
V_HYST
FB_PROT rising
1.20 1.235 1.27
V
4
%V_{TH_PROT}
FB_PROT Input Current
Startup Response Time
I_{FB_PROT}
V_{FB_PROT} = 1.4V
-100
+100
nA
t_START
EN_PROT rising, EN_LDO = IN, to
V_GATE = 0.5V
20
µs
GATE Rise Time
t_GATE
GATE rising to +8V, V_SOURCE = 0V
1
ms
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