19-0996; Rev 0; 9/07
Automotive 300mA LDO Voltage Regulators
with Tracker Output and Overvoltage Protector
8/MAX510
General Description
Features
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.
♦ 300mA LDO Regulator, Voltage Tracker, and OVP
Controller (MAX15008)
♦ 300mA LDO Regulator and Voltage Tracker
(MAX15010)
♦ 50mA Voltage Tracker with 3mV Tracking Accuracꢀ
♦ 5V to 40V Wide Operating Supplꢀ Voltage Range
♦ 45V Load Dump Protection
♦ 70µA Quiescent Current LDO Regulator
♦ OVP Controller Disconnects or Limits Output from
Batterꢀ Overvoltage Conditions (MAX15008)
♦ LDO Regulator with Enable, Hold, and Reset
The 300mA LDO regulator consumes less than 70µA 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.
Features
Ordering Information
PIN-
PACKAGE
PKG
CODE
PART
TEMP RANGE
MAX15008ATJ+
-40°C to +125°C 32 TQFN-EP** T3255-4
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.
MAX15010ATJ+* -40°C to +125°C 32 TQFN-EP** T3255-4
+Denotes a lead-free package.
*Future product—contact factory for availability.
**EP = Exposed pad.
Selector Guide
OVP
CONTROLLER
PART
LDO
TRACKER
MAX15008
MAX15010
√
√
√
√
√
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.
—
Pin Configurations
TOP VIEW
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.
24 23 22 21 20 19 18 17
16
15
HOLD 25
N.C. 26
EN_LDO
FB_LDO
14 REF
27
28
29
30
31
32
N.C.
N.C.
SOURCE
GATE
13
12
Applications
MAX15008
FB_TRK
TRACK
N.C.
Instrument Clusters
11 N.C.
10
*EP
Climate Control
FB_PROT
+
9
CT
N.C.
AM/FM Radio Power Supply
Multimedia Power Supply
Telematics Power Supply
1
2
3
4
5
6
7
8
TQFN
(5mm x 5mm)
*EP = EXPOSED PAD
Tꢀpical Operating Circuits appear at end of data sheet.
Pin Configurations continued at end of data sheet.
________________________________________________________________ Maxim Integrated Products
1
For pricing, deliverꢀ, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.