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MAX15011ATJ+

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21P22-P24
General Description
The MAX15009 includes a 300mA LDO regulator, a
switched output, and an overvoltage protection (OVP)
controller to protect downstream circuits from high-volt-
age load dump. The MAX15011 includes only the 300mA
LDO regulator and switched output. Both devices operate
over a wide supply voltage range from 5V to 40V and are
able to withstand load-dump transients up to 45V. The
MAX15009/MAX15011 feature short-circuit and thermal-
shutdown protection. These devices offer highly integrat-
ed power management solutions for automotive
applications such as instrument clusters, climate control,
and a variety of automotive power-supply circuits.
The 300mA LDO regulator consumes 67µA quiescent
current at light loads and is well suited to power
always-on circuits during “key off” conditions. The LDO
features independent enable and hold inputs, as well
as a microprocessor (µP) reset output with adjustable
reset timeout period.
The switched output of the MAX15009/MAX15011
incorporates a low R
DS(ON)
(0.28Ω, typ) pass transistor
switch internally connected to the output of the LDO
regulator. This switch features accurate current-limit
sensing circuitry and is capable of controlling remote
loads. The MAX15009/MAX15011 feature an adjustable
current limit and a programmable delay timer to set the
overcurrent detection blanking time of the switch and
autoretry timeout.
The MAX15009 OVP controller operates with an external
enhancement mode n-channel MOSFET. While the moni-
tored voltage remains below the adjustable threshold, the
MOSFET stays on. When the monitored voltage exceeds
the OVP threshold, the OVP controller quickly turns off the
external MOSFET. The OVP controller is configurable as a
load-disconnect switch or a voltage limiter.
The MAX15009/MAX15011 are available in a thermally
enhanced, 32-pin (5mm x 5mm), TQFN package and are
fully specified over the -40°C to +125°C automotive oper-
ating temperature range.
Applications
Instrument Clusters
Climate Control
AM/FM Radio Power Supply
Multimedia Power Supply
Telematics Power Supply
Features
o 300mA LDO Regulator, Switched Output, and OVP
Controller (MAX15009)
o 300mA LDO Regulator and Switched Output
(MAX15011)
o 5V to 40V Wide Operating Supply Voltage Range
o 45V Load Dump Protection
o 67µA Quiescent Current LDO Regulator
o OVP Controller Disconnects or Limits Output
Voltage During Battery Overvoltage Conditions
o LDO Regulator with Enable, Hold, and Reset
Features
o Internal 0.28Ω (typ) n-Channel Switch for
Switched Output
o 100mA Switched Output with Adjustable Current-
Limit Blanking/Autoretry Delay
MAX15009/MAX15011
Automotive 300mA LDO Regulators with
Switched Output and Overvoltage Protector
________________________________________________________________
Maxim Integrated Products
1
MAX15009
TQFN
(5mm x 5mm)
+
TOP VIEW
29
30
28
27
12
11
13
N.C.
N.C.
SGND
PGND
RESET
14
N.C.
OC_DELAY
OUT_LDO
IN
ILIM
IN
EN_PROT
12
OUT_SW
4567
2324 22 20 19 18
N.C.
N.C.
N.C.
SOURCE
GATE
N.C.
N.C.
OUT_LDO
3
21
31
10
N.C.
FB_PROT
32
9
N.C.
CT
OUT_SW
26
15
FB_LDO
*EP
*EP = EXPOSED PAD
N.C.
25
16
EN_LDO
N.C.
EN_SW
8
17
HOLD
Pin Configurations
19-0923; Rev 1; 2/08
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.
Typical Operating Circuits and Selector Guide appear at end
of data sheet.
Pin Configurations continued at end of data sheet.
Ordering Information
+
Denotes a lead-free package.
For tape and reel, add a T after “+.”
*
EP = Exposed pad.
EVALUATION KIT
AVAILABLE
PART
TEMP RANGE
PIN-
PACKAGE
PKG
CODE
MAX15009ATJ+
-40°C to +125°C 32 TQFN-EP*
T3255-4
MAX15011ATJ+
-40°C to +125°C 32 TQFN-EP*
T3255-4
MAX15009/MAX15011
Automotive 300mA LDO Regulators with
Switched Output and Overvoltage Protector
2 _______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS
(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)
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
(All pins referenced to SGND, unless otherwise noted.)
IN, GATE.................................................................-0.3V to +45V
EN_LDO, EN_SW, EN_PROT ......................-0.3V to (V
IN
+ 0.3V)
SOURCE ......................................................-0.3V to (V
IN
+ 0.3V)
OUT_LDO, FB_LDO, FB_PROT, RESET,
OC_DELAY .........................................................-0.3V to +12V
GATE to SOURCE ..................................................-0.3V to +12V
OUT_SW, ILIM, HOLD ......................-0.3V to (V
OUT_LDO
+ 0.3V)
OUT_SW to OUT_LDO ...........................................-12V to +0.3V
CT to SGND............................................................-0.3V to +12V
SGND to PGND .....................................................-0.3V to +0.3V
IN, OUT_LDO Current .......................................................700mA
OUT_SW Current...............................................................350mA
Current Sink/Source (all remaining pins) ............................50mA
Continuous Power Dissipation (T
A
= +70°C)
32-Pin TQFN (derate 34.5mW/°C above +70°C).............2.7W*
Thermal Resistance
θ
JA
..............................................................................29.0°C/W
θ
JC
................................................................................1.7°C/W
Operating Temperature Range .........................-40°C to +125°C
Junction Temperature......................................................+150°C
Storage Temperature Range .............................-60°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
*
As per JEDEC 51 Standard, Multilayer Board (PCB).
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Supply Voltage Range V
IN
V
IN
≥ V
OUT
+ 1.5V 5 40 V
EN_LDO = IN, EN_SW =
EN_PROT = 0V, I
OUT_LDO
= 0µA, LDO on, switch off,
protector off, measured
from SGND
67 85
EN_LDO = EN_SW = IN,
EN_PROT = 0V, LDO ON,
I
OUT_LDO
= 100µA, switch
on, I
OUT_SW
= 0µA,
protector off, measured
from SGND
290 360
MAX15009
EN_LDO = EN_SW =
EN_PROT = IN, LDO ON,
I
OUT_LDO
= 100µA, switch
on, I
OUT_SW
= 0µA,
protector on, measured
from SGND
360 500
Supply Current I
IN
MAX15011
EN_LDO = EN_SW = IN,
LDO ON, I
OUT_LDO
=
100µA, switch on, I
OUT_SW
= 0µA, measured from
SGND
268 360
µA
T
A
= -40°C to
+85°C
16 30
Shutdown Supply Current I
SHDN
EN_LDO = EN_SW =
EN_PROT = SGND,
measured from
SGND
T
A
= -40°C to
+125°C
40
µA
IN Undervoltage Lockout V
UVLO
V
IN
falling, GATE disabled 4.10 4.27 4.45 V
IN Undervoltage Lockout
Hysteresis
V
UVLO_HYST
260 mV
MAX15009/MAX15011
Automotive 300mA LDO Regulators with
Switched Output and Overvoltage Protector
_______________________________________________________________________________________ 3
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Thermal-Shutdown
Temperature
T
SHDN
+160 °C
Thermal Hysteresis T
HYST
20 °C
LDO
I
LOAD
= 1mA, FB_LDO = SGND 4.92 5.00 5.09
Output Voltage V
OUT_LDO I
LOAD
= 300mA, V
IN
= 8V,
FB_LDO = SGND
4.88 5.00 5.11
V
FB_LDO Set-Point Voltage V
FB_LDO
With respect to SGND, I
LOAD
= 1mA,
V
OUT_LDO
= 5V, adjustable output option
1.21 1.235 1.26 V
FB_LDO rising 0.125
Dual Mode™ FB_LDO
Threshold
V
FB_LDO_TH
FB_LDO falling 0.064
V
FB_LDO Input Current I
FB_LDO
V
FB_LDO
= 1V -100 +100 nA
LDO Output Voltage V
LDO_ADJ
Adjustable output option (Note 2) 1.8 11.0 V
I
LOAD
= 300mA (Note 3) 800 1500
LDO Dropout Voltage V
DO
I
LOAD
= 200mA (Note 3) 520 1000
mV
LDO Output Current I
OUT_LDO
(Note 4) 300 mA
LDO Output Current Limit I
LIM_LDO
OUT_LDO = SGND, V
IN
= 6V 330 500 700 mA
6V ≤ V
IN
≤ 40V, I
LOAD
= 1mA,
V
OUT_LDO
= 5V
0.03 0.2
6V ≤ V
IN
≤ 40V, I
LOAD
= 1mA,
FB_LDO = SGND, V
OUT_LDO
= 3.3V
0.03 0.1
6V ≤ V
IN
≤ 40V, I
LOAD
= 20mA,
FB_LDO = SGND, V
OUT_LDO
= 5V
0.27 1
OUT_LDO Line Regulation
ΔV
OUT
/
ΔV
IN
6V ≤ V
IN
≤ 40V, I
LOAD
= 20mA,
V
OUT_LDO
= 3.3V
0.27 0.5
mV/V
1mA to 300mA, V
IN
= 8V,
FB_LDO = SGND
0.054 0.15
OUT_LDO Load Regulation
ΔV
OUT
/
ΔI
OUT
1mA to 300mA, V
IN
= 6.3V,
V
OUT_LDO
= 3.3V
0.038 0.100
mV/mA
OUT_LDO Power-Supply
Rejection Ratio
PSRR
I
LOAD
= 10mA, f = 100Hz, 500mV
P-P
,
V
OUT_LDO
= 5V
60 dB
OUT_LDO Startup Delay
Time
t
STARTUP_DELAY
I
OUT_LDO
= 0mA, from EN_LDO rising to
10% of V
OUT_LDO
(nominal),
FB_LDO = SGND
30 µs
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)
Dual Mode is a trademark of Maxim Integrated Products, Inc.
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MAX15011ATJ+

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Buy MAX15011ATJ+
Manufacturer:
Maxim Integrated
Description:
LDO Voltage Regulators Automotive 300mA w/Switched Output
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