User Manual

MAX15009/MAX15011
Automotive 300mA LDO Regulators with
Switched Output and Overvoltage Protector
_______________________________________________________________________________________ 5
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
V
SOURCE
= V
IN
= 5.5V,
R
GATE
to IN = 1MΩ
V
IN
+
3.2
V
IN
+
3.5
V
IN
+
3.8
GATE Output High Voltage V
GATE
- V
IN
V
SOURCE
= V
IN
; V
IN
≥ 14V,
R
GATE
to IN = 1MΩ
V
IN
+
7.0
V
IN
+
8.1
V
IN
+
9.5
V
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
ILIM = OUT_LDO, V
IN
= 8V 170 200 240
R
LIM
= 100kΩ to SGND,
V
OUT_LDO
= 5V, V
IN
= 8V
85 100 120
Switch Current Limit I
SW_LIM
R
LIM
= 39kΩ to SGND,
V
OUT_LDO
= 5V, V
IN
= 8V
30 40 50
mA
Current-Limit Selector ILIM
Voltage
V
ILIM
R
LIM
= 100kΩ
0.395 V
OC_DELAY Timeout
Threshold
V
OC_DELAY
1.194 1.235 1.270 V
OC_DELAY Timeout Pullup
Current
I
OC_DELAY_UP
V
OC_DELAY
= 0.5V rising
12.5 16.0 21.3 µA
OC_DELAY Timeout
Pulldown Current
I
OC_DELAY_DOWN
V
OC_DELAY
= 0.5V, falling
0.75 1.00 1.40 µA
Minimum OC_DELAY
Timeout
t
OC_DELAY_MIN
C
OC_DELAY
is unconnected
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.