Rainbow Electronics MAX15010 User Manual

General Description

The MAX15008 features a 300mA LDO regulator, a volt­age tracker, and an overvoltage protection (OVP) con­troller 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 thermal­shutdown protection. These devices offer highly integrat­ed 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 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 an adjustable reset
timeout period.

The voltage tracker accurately (±3mV) tracks a voltage
applied to its input from either the LDO output or an exter­nal 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 pro­tection 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 moni­tored 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 oper­ating 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

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

PIN­PACKAGE

PKG

CODE

MAX15008ATJ+

T3255-4

MAX15010ATJ+

T3255-4

-40°C to +125°C 32 TQFN-EP*

-40°C to +125°C 32 TQFN-EP*

TOP VIEW

N.C.

OUT_LDO

IN

OUT_LDO

21

MAX15008

4567

3

ADJ

SGND

OUT_TRK

TQFN

(5mm x 5mm)

IN

*EP

PGND

EN_PROT

EN_TRK

17

8

N.C.

RESET

16

15

14

13

12

11

10

9

EN_LDO

FB_LDO

REF

SOURCE

GATE

N.C.

FB_PROT

CT

HOLD

N.C.

N.C.

N.C.

FB_TRK

TRACK

N.C.

N.C.

*EP = EXPOSED PAD

N.C.

2324 22 20 19 18

25

26

27

28

29

30

31

+

32

12

N.C.

N.C.

MAX15008/MAX15010

Automotive 300mA LDO Voltage Regulators
with Tracker Output and Overvoltage Protector

2 _______________________________________________________________________________________

ABSOLUTE MAXIMUM RATINGS

ELECTRICAL CHARACTERISTICS

(VIN= V

TRACK

= +14V, V

SGND

= V

PGND

= 0V, C

GATE

= 6000pF, CIN= 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, TA= TJ= -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

*

As per JEDEC51 Standard, Multilayer Board (PCB).

Supply Voltage Range V

Supply Current I

Shutdown Supply Current I

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

SHDN

IN

MAX15008

IN

MAX15010

E N _LD O =
E N _P ROT =
EN_TRK = 0V,
measured
from SGND

EN_LDO = IN, EN_TRK =
EN_PROT = 0V, I
= 0µA, LDO on, tracker
off, protector off,
measured from SGND

EN_LDO = EN_TRK = IN,
EN_PROT = 0V, LDO on,
I

OUT_LDO

on, I
protector off, V
V

OUT_TRK

measured from SGND

EN_LDO = EN_TRK =
EN_PROT = IN, LDO on,
I

OUT_LDO

on, I
protector on, V
V

OUT_TRK; VADJ

measured from SGND

EN_LDO = EN_TRK = IN,
LDO on, I
100µA, tracker on,
I

OUT_TRK

measured from SGND

TA = -40°C to +85°C 16 30

T

A

= 100µA, tracker

OUT_TRK

, V

= 100µA, tracker

OUT_TRK

OUT_LDO

= 0µA,

= -40°C to +125°C 40

OUT_LDO

= 0µA,

FB_TRK

= V

ADJ

= 0µA,

FB_TRK

= V

=

REF,

=

REF,

=

540V

67 85

120 180

190 280

115 160

µA

µA

MAX15008/MAX15010

Automotive 300mA LDO Voltage Regulators

with Tracker Output and Overvoltage Protector

_______________________________________________________________________________________ 3

ELECTRICAL CHARACTERISTICS (continued)

(VIN= V

TRACK

= +14V, V

SGND

= V

PGND

= 0V, C

GATE

= 6000pF, CIN= 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, TA= TJ= -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.

IN Undervoltage Lockout V

IN Undervoltage Lockout
Hysteresis

Internal Voltage Reference REF I

Internal Voltage Reference
Maximum Current

Thermal-Shutdown
Temperature

Thermal Hysteresis T

LDO

Output Voltage V

FB_LDO Set-Point Voltage V

Dual Mode™ FB_LDO
Threshold

FB_LDO Input Current I

LDO Output Voltage Range V

LDO Dropout Voltage
(Note 3)

LDO Output Current I

LDO Output Current Limit I

OUT_LDO Line Regulation

OUT_LDO Load Regulation

OUT_LDO Power-Supply
Rejection Ratio

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

V

UVLO_HYST

T

OUT_LDO

UVLO

I

REF

SHDN

HYST

VIN falling, GATE disabled 4.10 4.27 4.45 V

= 0µA 1.21 1.235 1.26 V

REF

ΔV

REF

I

= 1mA, FB_LDO = SGND 4.92 5 5.09

LOAD

I

LOAD

= ±200mV -6 +6 µA

= 300mA, VIN = 8V,

FB_LDO = SGND

FB_LDO

V

FB_LDO_TH

FB_LDO

LDO_ADJ

V

DO

OUT_LDO

LIM_LDO

ΔV

OUT

ΔV

IN

With respect to SGND, I
V

OU T _L D O

= 5V ( ad j ustab l e outp ut op ti on)

FB_LDO rising 0.125

FB_LDO falling 0.064

V

= 1V -100 +100 nA

FB_LDO

Adjustable output option (Note 2) 1.8 11.0 V

I

= 300mA 775 1500

LOAD

I

= 200mA 520 1000

LOAD

(Note 4) 300 mA

OUT_LDO = GND, VIN = 6V 330 500 700 mA

6V ≤ VIN ≤ 40V, I
V

6V ≤ VIN ≤ 40V, I
V

/

6V ≤ VIN ≤ 40V, I

OUT_LDO

OUT_LDO

LOAD

= 5V

LOAD

= 3.3V

LOAD

FB_LDO = SGND, V

6V ≤ VIN ≤ 40V, I
V

OUT_LDO

LOAD

= 3.3V

1mA to 300mA, VIN = 8V,

ΔV

ΔI

PSRR

OUT

OUT

FB_LDO = SGND, V

/

1mA to 300mA, VIN = 6.3V,
V

OUT_LDO

I

LOAD

C

OUT_LDO

= 3.3V

= 10mA, f = 100Hz, 500mV

= 22µF, V

= 1mA,

LOAD

= 1mA,

= 1mA,

= 20mA,

OUT_LDO

= 5V

= 20mA,

OUT_LDO

OUT_LDO

= 5V

= 5V

,

P-P

260 mV

+160 °C

20 °C

4.80 5 5.11

V

1.21 1.235 1.26 V

V

mV

0.03 0.2

0.03 0.1

mV/V

0.27 1

0.27 0.5

0.054 0.15

mV/mA

0.038 0.1

60 dB

MAX15008/MAX15010

Automotive 300mA LDO Voltage Regulators
with Tracker Output and Overvoltage Protector

4 _______________________________________________________________________________________

ELECTRICAL CHARACTERISTICS (continued)

(VIN= V

TRACK

= +14V, V

SGND

= V

PGND

= 0V, C

GATE

= 6000pF, CIN= 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, TA= TJ= -40°C to +125°C, unless

otherwise noted. Typical values are at T

A

= +25°C.) (Note 1)

OUT_LDO Startup Delay
Time

OUT_LDO Overvoltage
Protection Threshold

OUT_LDO Overvoltage
Protection Sink Current

ENABLE/HOLD INPUTS

EN_LDO, EN_PROT,
EN_TRK Input Threshold
Voltage

EN_LDO, EN_PROT,
EN_TRK Input Pulldown
Current

HOLD Input Threshold
Voltage

HOLD Input Pullup I

RESET

RESET Voltage Threshold
High

RESET Voltage Threshold
Low

V

OUT_LDO

CT Ramp Current I

CT Ramp Threshold V

RESET Output-Voltage Low V
RESET Open-Drain

Leakage Current

LOAD DUMP PROTECTOR (MAX15008 only)

FB_P ROT Thr eshol d V ol tag eV

FB_PROT Threshold
Hysteresis

FB_PROT Input Current I

Startup Response Time t

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

t

STARTUP_DELAY

I

OUT_LDO

to 10% of V

= 0mA, from EN_LDO rising

OUT_LDO

(nominal),

30 µs

FB_LDO = SGND

V

OV_TH

I

OV

V

IH

V

IL

I

EN_PD

V

IH

V

IL

HOLD_PU

1mA sink from OUT_LDO 105 110 %V

V

OUT_LDO

= V

(nominal) x 1.15 8 19 mA

OUT

2

0.7

EN_ is internally pulled low to SGND 1 µA

1.4

0.4

HOLD is internally pulled high to
OUT_LDO

0.6 µA

RESET goes HIGH when rising

90.0 92.5 95.0 %V

90.0 92.5 95.0 %V

V

RESET_H

V

OUT_LDO

crosses this threshold,

FB_LDO = SGND
RESET goes HIGH when rising

V

OUT_LDO

crosses this threshold

RESET goes LOW when falling

88 90 92 %V

88 90 92 %V

4%V

20 µs

to RESET Delay t

V

R ES ET _L

RESET_FALL

CT

CT_TH

OL

I

LEAK_RESET

TH_PROT

V

HYST

FB_PROT

START

V

OUT_LDO

crosses this threshold,

FB_LDO = SGND
RESET goes LOW when falling

V

OUT_LDO

V

OUT_LDO

crosses this threshold

falling, 0.1V/µs 19 µs

VCT = 0V 1.50 2.0 2.35 µA

VCT rising 1.19 1.235 1.27 V

I

= 1mA, output asserted 0.1 V

SINK

Output not asserted 150 nA

FB_PROT rising 1.20 1.235 1.27 V

V

FB_PROT

= 1.4V -100 +100 nA

EN_PROT rising, EN_LDO = IN, to

= 0.5V

V

GATE

OUT_LDO

V

V

OUT_LDO

FB_LDO

OUT_LDO

FB_LDO

TH_PROT

MAX15008/MAX15010

Automotive 300mA LDO Voltage Regulators

with Tracker Output and Overvoltage Protector

_______________________________________________________________________________________ 5

ELECTRICAL CHARACTERISTICS (continued)

(VIN= V

TRACK

= +14V, V

SGND

= V

PGND

= 0V, C

GATE

= 6000pF, CIN= 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, TA= TJ= -40°C to +125°C, unless

otherwise noted. Typical values are at T

A

= +25°C.) (Note 1)

Note 1: Limits to -40°C are guaranteed by design.
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 VIN= V

OUT_LDO

+ 1.5V.

Note 4: Maximum output current may be limited by the power dissipation of the package.

GATE Rise Time t

FB_PROT to GATE Turn-Off
Propagation Delay

GATE Output High Voltage V

GATE Output Pulldown
Current

GATE C har g e- P um p C ur r ent I

GATE-to-SOURCE Clamp
Voltage

TRACKER

Tracker Supply Voltage
Range

ADJ, FB_TRK Input Voltage V

Tracker Output Common­Mode Range

Tracking Accuracy Over
Line

Tracking Accuracy Over
Load

ADJ, FB_TRK Input Current I

Dropout Voltage V

Tracker Output Current I

Output Current Limit I

Current Consumption I

OUT_TRK Power-Supply
Rejection Ratio

OUT_TRK Reverse Current I

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

GATE

t

OV

GATE

I

GATEPD

GATE

V

CLMP

V

TRACK

ADJ, VFB_TRK

V

CM

ΔV

Q_LINE

ΔV

Q_LOAD

FB_TRK, IADJ

DO

OUT_TRK

OUT_TRK_LIM

Q

GATE rising to +8V, V

FB_P ROT step fr om V
to V

TH_PROT

V

SOURCE

R

GATE

V

SOURCE

R

GATE

V

GATE

+ 250mV

= VIN = 5.5V,

to IN = 1MΩ

= VIN; VIN ≥ 14V,

to IN = 1MΩ

= 5V, V

EN_PROT

GATE = SGND 45 µA

I

OUT_LDO

V

OUT_TRK

ΔV

V

TRACK

50mA, V
ΔV

V

FB_TRK

V

OUT_TRK

V

ADJ

V

OUT_TRK

IQ = I
50mA, V

= 20mA, V

= 5V, V

Q

= V

FB_TRK

- V

= 6V, 0.1mA ≤ I

= V

ADJ

FB_TRK

= V

ADJ

- V

Q

= V

= 5V, I

= V

OUT_TRK

= 0V 85 100 115 mA

- I

TRACK

ADJ

OUT_TRK

= V

= EN_PROT = SGND, EN_TRK = IN

PSRR

OUT_TRK_REVERSE

I

OUT_LDO

500mV
V

ADJ

V

TRACK

40V, V

= 10mA, f = 100Hz,

, V

OUT_TRK

P-P

= 5V

= 14V, V

= 5V

ADJ

SOURCE

T H _ P R OT

= 0V 1 ms

- 250m V

IN +

3.2

IN +

7.0

0.6 µs

IN +

3.5

IN +

8.1

IN +

3.8

IN +

9.5

= 0V 63 100 mA

12 16 18 V

540V

TRACK

- 0.5

TRACK

- 0.5

FB_TRK

TRACK

ADJ

OUT_TRK

ADJ

=

= 6V to 28V,

OUT_TRK

≤

= 5V,

1.1

1.1

-3 +3 mV

-3 +3 mV

= 5V 0.03 0.2 µA

OUT_TRK

= 50mA 0.28 0.5 V

= 5V 50 mA

FB_TRK

= V

OUT_TRK

, I

OUT_TRK

= 5V, EN_LDO

FB_TRK

= V

=

,

FB_TRK

2.7 6 mA

60 dB

=

10 µA

V

V

V

MAX15008/MAX15010

Automotive 300mA LDO Voltage Regulators
with Tracker Output and Overvoltage Protector

6 _______________________________________________________________________________________

Typical Operating Characteristics

(VIN= V

EN_

= +14V, CIN= 10µF, C

OUT_LDO

= 22µF, C

TRACK

= C

OUT_TRK

= 10µF, V

OUT_LDO

= 5V, FB_LDO = SGND, TA= +25°C,

unless otherwise specified.)

LDO GROUND CURRENT

vs. LOAD CURRENT

MAX15008 toc01

LOAD CURRENT (mA)

0 0.3 0.6 0.90.1 0.4 0.70.2 0.5 0.8 1.0

74

70

72

68

66

64

62

60

58
56

54

52

GROUND CURRENT (μA)

TA = -40°C

TA = +25°C

TA = +85°C

TA = +125°C

LDO GROUND CURRENT

vs. LOAD CURRENT

MAX15008 toc02

LOAD CURRENT (mA)

0 75 150 22525 100 17550 125 200 250 275 300

100

90

110

80

70

60

50

GROUND CURRENT (μA)

TA = +25°C

TA = -40°C

TA = +85°C

TA = +125°C

SHUTDOWN SUPPLY CURRENT

vs. TEMPERATURE

MAX15008 toc03

TEMPERATURE (°C)

20 40-40 100-60 12080060-20 140

25

20

30

15

10

5

0

I

SHDN

(μA)

LDO POWER-SUPPLY REJECTION RATIO

MAX15008 toc04

FREQUENCY (Hz)

0.01 1010.1 100 1000

0

-10

-20

-30

-40

-50

-60

-70

PSRR (dB)

I

OUT_LDO

= 10mA

TRACKER POWER-SUPPLY REJECTION RATIO

MAX15008 toc05

FREQUENCY (kHz)

0.1 101 100 1000

0

-10

-20

-30

-40

-50

-60

-70

TRACKER PSRR (dB)

I

OUT_LDO

= 10mA

VIN UVLO HYSTERESIS

vs. TEMPERATURE

MAX15008 toc06

TEMPERATURE (°C)

-50 7525-25 125500 100 150

400

350

300

250

200

150

100

UVLO HYSTERESIS (mV)

REF VOLTAGE

vs. TEMPERATURE

MAX15008 toc07

TEMPERATURE (°C)

-50 7525-25 125500 100 150

1.245

1.240

1.235

1.230

1.225

1.220

V

REF

(V)

LDO OUTPUT VOLTAGE

vs. INPUT VOLTAGE

MAX15008 toc08

VIN (V)

02010 30 40

6

5

4

3

2

1

0

V

OUT_LDO

(V)

I

OUT_LDO

= 10mA

I

OUT_LDO

= 300mA

(PULSED)

MAX15008/MAX15010

Automotive 300mA LDO Voltage Regulators

with Tracker Output and Overvoltage Protector

_______________________________________________________________________________________

7

Typical Operating Characteristics (continued)

(VIN= V

EN_

= +14V, CIN= 10µF, C

OUT_LDO

= 22µF, C

TRACK

= C

OUT_TRK

= 10µF, V

OUT_LDO

= 5V, FB_LDO = SGND, TA= +25°C,

unless otherwise specified.)

LDO LOAD-TRANSIENT RESPONSE

2ms/div

TRACKER LOAD-TRANSIENT RESPONSE

400μs/div

MAX15008 toc09

MAX15008 toc12

I

OUT_LDO

100mA/div
0A

V

OUT_LDO

5V, AC-COUPLED
20mV/div

I

OUT_TRK

50mA/div
0A

V

OUT_TRK

5V, AC-COUPLED
20mV/div

LDO LOAD-TRANSIENT RESPONSE

0

-0.5

-1.0

(mV)

-1.5

OUT_TRK

- V

ADJ

-2.0

V

-2.5

-3.0

400μs/div

TRACKER ACCURACY

vs. LOAD CURRENT

ADJ = OUT_LDO
FB_TRK = OUT_TRK

I

(mA)

OUT_TRK

MAX15008 toc10

50100204030 60 70

I

OUT_LDO

100mA/div

0A

V

OUT_LDO

5V, AC-COUPLED
100mV/div

MAX15008 toc13

LDO OUTPUT VOLTAGE

vs. TEMPERATURE

5.10

I

OUT_LDO

I

OUT_LDO

= 100μA I

= 100mA

I

OUT_LDO

TEMPERATURE (°C)

OUT_LDO

5.05

5.00

(V)

4.95

OUT_LDO

V

4.90

4.85

4.80

-50 7525-25 125500 100 150

TRACKER ACCURACY (V

vs. TEMPERATURE

3

2

1

I

= 100μA

OUT_TRK

0

-1

-2

TRACKER ACCURACY (mV)

I

= 1mA

OUT_TRK

-3

-4
0 125-75 100755025-25-50 150

TEMPERATURE (°C)

= 300mA

FB_TRK

I

OUT_TRK

= 10mA

VIN = 8V

= V

= 70mA

MAX15008 toc11

)

ADJ

MAX15008 toc14

V

20V/div

V

OUT_LDO

3.3V, AC-COUPLED
50mV/div

V

OUT_TRK

3.3V, AC-COUPLED

50mV/div

V

OUT_PROT

20V/div

LINE-TRANSIENT RESPONSE

IN

40ms/div

MAX15008 toc15

V

10V/div

0V

0V

V

OUT_LDO

3.3V, AC-COUPLED
20mV/div

V

OUT_TRK

3.3V, AC-COUPLED

20mV/div

V

OUT_PROT

10V/div

LINE-TRANSIENT RESPONSE

IN

MAX15008 toc16

40ms/div

0V

0V

MAX15008/MAX15010

Automotive 300mA LDO Voltage Regulators
with Tracker Output and Overvoltage Protector

8 _______________________________________________________________________________________

Typical Operating Characteristics (continued)

(VIN= V

EN_

= +14V, CIN= 10µF, C

OUT_LDO

= 22µF, C

TRACK

= C

OUT_TRK

= 10µF, V

OUT_LDO

= 5V, FB_LDO = SGND, TA= +25°C,

unless otherwise specified.)

1000

900

800

700

600

500

400

300

LDO DROPOUT VOLTAGE (mV)

200

100

LDO DROPOUT VOLTAGE

vs. LOAD CURRENT

0

0 200100 300

I

(mA)

OUT_LDO

MAX15008 toc17

V

V

V

10V/div

V

RESET

5V/div

OUT_LDO

5V/div

OUT_TRK

5V/div

IN

STARTUP RESPONSE THROUGH V

I

= 100mA

OUT_LDO

= 100mA

I

OUT_TRK

EN_LDO = EN_TRK = IN

20ms/div

IN

MAX15008 toc18

STARTUP RESPONSE THROUGH EN

V

IN

20V/div

V

EN_LDO

5V/div

0V

0V

V

0V

V

0V

V

RESET

5V/div

OUT_LDO

5V/div

OUT_TRK

5V/div

I

OUT_LDO

I

OUT_TRK

V

EN_TRK

= 100mA

= 100mA

= V

EN_LDO

20ms/div

MAX15008 toc19

0V

0V

0V

0V

0V

V

V

SHUTDOWN RESPONSE THROUGH V

V

IN

10V/div

I

= 100mA

OUT_LDO

= 70mA

I

OUT_TRK

= V

V

EN_TRK

V

RESET

5V/div

OUT_LDO

5V/div

OUT_TRK

5V/div

EN_LDO

= V

IN

20ms/div

MAX15008 toc20

IN

V

0V

0V

V

OUT_LDO

0V

V

OUT_TRK

0V

SHUTDOWN RESPONSE THROUGH EN

V

IN

20V/div

EN_LDO

5V/div

V

RESET

5V/div

5V/div

5V/div

GROUND CURRENT DISTRIBUTION

HISTOGRAM (T

70

60

50

40

30

NUMBER OF PARTS

20

10

0

696765

GROUND CURRENT (μA)

= -40°C)

A

7371

75

77 79

EN_LDO = EN_TRK

= 100mA

I

OUT_LDO

= 70mA

I

OUT_TRK

400μs/div

MAX15008 toc23

MAX15008 toc21

0V

V

EN_LDO

5V/div

0V

V

OUT_LDO

5V/div

0V

HOLD

0V

5V/div

RESET
5V/div

0V

GROUND CURRENT DISTRIBUTION

HISTOGRAM (T

80

70

60

50

40

30

NUMBER OF PARTS

20

10

0

49

53

45

47

59 63 67 71 75

51 55

GROUND CURRENT (μA)

LDO, EN_LDO, AND HOLD TIMING

HOLD PULLED UP
TO OUT_LDO

200ms/div

= +125°C)

A

MAX15008 toc24

73 77

6557

69

61

79

MAX15008 toc22

0V

0V

0V

0V