MAX15009 Datasheet, PDF (5/23 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
FB_PROT to GATE Turn-Off
Propagation Delay
t_OV
FB_PROT rising from V_{TH_PROT} -
250mV to V_{TH_PROT} + 250mV
0.6
µs
GATE Output High Voltage
V_GATE - V_IN
V_SOURCE = V_IN = 5.5V,
R_GATE to IN = 1MΩ
V_SOURCE = V_IN; V_IN ≥ 14V,
R_GATE to IN = 1MΩ
V_IN + V_IN + V_IN +
3.2
3.5
3.8
V
V_IN + V_IN + V_IN +
7.0
8.1
9.5
GATE Output Pulldown
Current
I_GATEPD
V_GATE = 5V, V_{EN_PROT} = 0V
63
100
mA
GATE Charge-Pump
Current
I_GATE
GATE = SGND
45
µA
GATE-to-SOURCE Clamp
Voltage
V_CLMP
12
16
18
V
SWITCH
Switch Dropout
ΔV_SW
ΔV_SW = V_{OUT_LDO} - V_{OUT_SW},
I_{OUT_SW} = 100mA, V_{OUT_LDO} = 5V,
no external MOSFET
36
70
mV
Switch Current Limit
Current-Limit Selector ILIM
Voltage
OC_DELAY Timeout
Threshold
OC_DELAY Timeout Pullup
Current
OC_DELAY Timeout
Pulldown Current
Minimum OC_DELAY
Timeout
I_{SW_LIM}
V_ILIM
ILIM = OUT_LDO, V_IN = 8V
R_LIM = 100kΩ to SGND,
V_{OUT_LDO} = 5V, V_IN = 8V
R_LIM = 39kΩ to SGND,
V_{OUT_LDO} = 5V, V_IN = 8V
R_LIM = 100kΩ
V_{OC_DELAY}
I_{OC_DELAY_UP} ^VOC_DELAY ^{= 0.5V rising}
I_{OC_DELAY_DOWN} ^VOC_DELAY ^{= 0.5V, falling}
t_{OC_DELAY_MIN} ^COC_DELAY ^{is unconnected}
170 200
240
85
100
120
mA
30
40
50
0.395
V
1.194 1.235 1.270
V
12.5 16.0 21.3
µA
0.75 1.00 1.40
µA
12
µs
EN_SW to OUT_SW
Turn-On Time
OUT_SW rising to +0.5V,
R_{OUT_SW} = 1kΩ
38
µs
EN_SW to OUT_SW
Turn-Off Propagation Delay
t_{OV_SW}
EN_SW falling, V_{OUT_LDO} - V_{OUT_SW}
rising to +1V, R_{OUT_SW} = 1kΩ,
V_{OUT_LDO} = 5V
18
µs
Note 1: Specifications to -40°C are guaranteed by design and not production tested.
Note 2: 1.8V is the minimum limit for proper HOLD functionality.
Note 3: Dropout is defined as V_IN - V_{OUT_LDO} when V_{OUT_LDO} is 98% of the value of V_{OUT_LDO} for V_IN = V_{OUT_LDO} + 1.5V.
Note 4: Maximum output current may be limited by the power dissipation of the package.
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