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MAX15010ATJ+

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21P22-P24
General Description
The MAX15008 features a 300mA LDO regulator, a volt-
age tracker, and an overvoltage protection (OVP) con-
troller to protect downstream circuits from high-voltage
load dump. The MAX15010 includes only the 300mA
LDO voltage regulator and voltage tracker. Both devices
operate over a wide 5V to 40V supply voltage range and
are able to withstand load-dump transients up to 45V. The
MAX15008/MAX15010 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 less than 67µA qui-
escent 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 an adjustable reset
timeout period.
The voltage tracker accurately (±3mV) tracks a voltage
applied to its input from either the LDO output or an exter-
nal source. It can supply up to 50mA of current to a
remote sensor, allowing for precise ratiometric tracking in
automotive applications. A separate enable input turns
the tracker on or off, reducing supply current when the
tracker is unused. The voltage tracker also features pro-
tection against battery reversal, an output short circuit to
the battery, or an output-voltage excursion below ground
potential to as much as -5V.
The MAX15008 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 MAX15008/MAX15010 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, Voltage Tracker, and OVP
Controller (MAX15008)
o 300mA LDO Regulator and Voltage Tracker
(MAX15010)
o 50mA Voltage Tracker with ±3mV Tracking Accuracy
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 from
Battery Overvoltage Conditions (MAX15008)
o LDO Regulator with Enable, Hold, and Reset
Features
MAX15008/MAX15010
Automotive 300mA LDO Voltage Regulators
with Tracker Output and Overvoltage Protector
________________________________________________________________
Maxim Integrated Products
1
MAX15008
TQFN
(5mm x 5mm)
+
TOP VIEW
29
30
28
27
12
11
13
N.C.
ADJ
SGND
PGND
RESET
14
N.C.
N.C.
OUT_LDO
IN
N.C.
IN
EN_PROT
12
N.C.
4567
2324 22 20 19 18
FB_TRK
TRACK
REF
SOURCE
GATE
N.C.
OUT_TRK
OUT_LDO
3
21
31
10
N.C.
FB_PROT
32
9
N.C.
CT
N.C.
26
15
FB_LDO
*EP
*EP = EXPOSED PAD
N.C.
25
16
EN_LDO
N.C.
EN_TRK
8
17
HOLD
Pin Configurations
19-0996; 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 appear at end of data sheet.
Pin Configurations continued at end of data sheet.
Ordering Information
+
Denotes a lead-free package.
*
EP = Exposed pad.
PART LDO
TRACKER
OVP
CONTROLLER
MAX15008 √√ √
MAX15010 √√ —
Selector Guide
EVALUATION KIT
AVAILABLE
PART
TEMP RANGE
PIN-
PACKAGE
PKG
CODE
MAX15008ATJ+
-40°C to +125°C 32 TQFN-EP*
T3255-4
MAX15010ATJ+
-40°C to +125°C 32 TQFN-EP*
T3255-4
MAX15008/MAX15010
Automotive 300mA LDO Voltage Regulators
with Tracker Output and Overvoltage Protector
2 _______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS
(V
IN
= V
TRACK
= +14V, V
SGND
= V
PGND
= 0V, C
GATE
= 6000pF, C
IN
= 10µF (ESR ≤ 1.5Ω), C
OUT_LDO
= 22µF (ceramic), C
TRACK
=
3.3µF (ceramic) (ESR ≤ 1.5Ω), C
OUT_TRK
= 10µF (ESR ≤ 1.5Ω), C
REF
= 1000pF, V
OUT_LDO
= 5V, 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
TRACK.....................................................................-20V to +45V
EN_LDO, EN_PROT, EN_TRK .....................-0.3V to (V
IN
+ 0.3V)
SOURCE ......................................................-0.3V to (V
IN
+ 0.3V)
TRACK to OUT_TRK................................................-40V to +40V
OUT_TRK, FB_TRK, ADJ...........................................-5V to +45V
OUT_LDO, FB_LDO, FB_PROT, RESET.................-0.3V to +12V
GATE to SOURCE ..................................................-0.3V to +12V
HOLD................................................-0.3V to (V
OUT_LDO
+ 0.3V)
REF to SGND............................................................-0.3V to +6V
CT to SGND............................................................-0.3V to +12V
SGND to PGND .....................................................-0.3V to +0.3V
IN, OUT_LDO Current .......................................................700mA
TRACK, OUT_TRK 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
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Supply Voltage Range V
IN
540V
EN_LDO = IN, EN_TRK =
EN_PROT = 0V, I
OUT_LDO
= 0µA, LDO on, tracker
off, protector off,
measured from SGND
67 85
EN_LDO = EN_TRK = IN,
EN_PROT = 0V, LDO on,
I
OUT_LDO
= 100µA, tracker
on, I
OUT_TRK
= 0µA,
protector off, V
FB_TRK
=
V
OUT_TRK
, V
ADJ
= V
REF,
measured from SGND
120 180
MAX15008
EN_LDO = EN_TRK =
EN_PROT = IN, LDO on,
I
OUT_LDO
= 100µA, tracker
on, I
OUT_TRK
= 0µA,
protector on, V
FB_TRK
=
V
OUT_TRK
;
V
ADJ
= V
REF,
measured from SGND
190 280
Supply Current I
IN
MAX15010
EN_LDO = EN_TRK = IN,
LDO on, I
OUT_LDO
=
100µA, tracker on,
I
OUT_TRK
= 0µA,
measured from SGND
115 160
µA
T
A
= -40°C to +85°C 16 30
Shutdown Supply Current I
SHDN
E N _LD O =
E N _P ROT =
EN_TRK = 0V,
measured
from SGND
T
A
= -40°C to +125°C 40
µA
*
As per JEDEC51 Standard, Multilayer Board (PCB).
MAX15008/MAX15010
Automotive 300mA LDO Voltage Regulators
with Tracker Output and Overvoltage Protector
_______________________________________________________________________________________ 3
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
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
Internal Voltage Reference REF I
REF
= 0µA 1.21 1.235 1.26 V
Internal Voltage Reference
Maximum Current
I
REF
ΔV
REF
= ±200mV -6 +6 µA
Thermal-Shutdown
Temperature
T
SHDN
+160 °C
Thermal Hysteresis T
HYST
20 °C
LDO
I
LOAD
= 1mA, FB_LDO = SGND 4.92 5 5.09
Output Voltage V
OUT_LDO
I
LOAD
= 300mA, V
IN
= 8V,
FB_LDO = SGND
4.80 5 5.11
V
FB_LDO Set-Point Voltage V
FB_LDO
With respect to SGND, I
LOAD
= 1mA,
V
OU T _L D O
= 5V ( ad j ustab l e outp ut op ti on)
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 Range V
LDO_ADJ
Adjustable output option (Note 2) 1.8 11.0 V
I
LOAD
= 300mA 775 1500
LDO Dropout Voltage
(Note 3)
V
DO
I
LOAD
= 200mA 520 1000
mV
LDO Output Current I
OUT_LDO
(Note 4) 300 mA
LDO Output Current Limit I
LIM_LDO
OUT_LDO = GND, 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,
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, V
OUT_LDO
= 5V
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 0.1
mV/mA
OUT_LDO Power-Supply
Rejection Ratio
PSRR
I
LOAD
= 10mA, f = 100Hz, 500mV
P-P
,
C
OUT_LDO
= 22µF, V
OUT_LDO
= 5V
60 dB
ELECTRICAL CHARACTERISTICS (continued)
(V
IN
= V
TRACK
= +14V, V
SGND
= V
PGND
= 0V, C
GATE
= 6000pF, C
IN
= 10µF (ESR ≤ 1.5Ω), C
OUT_LDO
= 22µF (ceramic), C
TRACK
=
3.3µF (ceramic) (ESR ≤ 1.5Ω), C
OUT_TRK
= 10µF (ESR ≤ 1.5Ω), C
REF
= 1000pF, V
OUT_LDO
= 5V, 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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MAX15010ATJ+

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Manufacturer:
Maxim Integrated
Description:
LDO Voltage Regulators Automotive 300mA w/Tracker Output
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