MAX6793TPLD2+ Maxim Integrated Products, MAX6793TPLD2+ Datasheet

MAX6793TPLD2+

Manufacturer Part Number

MAX6793TPLD2+

Description

IC REG LIN W/SPR VSR 20-TQFN

Manufacturer

Maxim Integrated Products

Type

Regulator/Supervisorr

Datasheet

1.MAX6796TPLD2T.pdf (25 pages)

Specifications of MAX6793TPLD2+

Number Of Voltages Monitored

Output

Open Drain or Open Collector

Reset

Active Low

Reset Timeout

8.75 ms Minimum

Voltage - Threshold

4.625V

Operating Temperature

-40°C ~ 125°C

Mounting Type

Surface Mount

Package / Case

20-TQFN Exposed Pad

Number Of Outputs

Polarity

Positive

Input Voltage Max

72 V

Output Voltage

1.8 V to 11 V, 5 V

Output Type

Adjustable, Fixed

Dropout Voltage (max)

1.8 V at 150 mA

Output Current

150 mA

Line Regulation

1 %

Load Regulation

1.5 %

Maximum Power Dissipation

2.6667 W

Maximum Operating Temperature

+ 125 C

Mounting Style

SMD/SMT

Minimum Operating Temperature

- 40 C

Lead Free Status / RoHS Status

Lead free / RoHS Compliant

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19-3875; Rev 1; 8/06

The MAX6791–MAX6796 ultra-low-quiescent-current,

single-/dual-output linear regulators are ideal for auto-

motive applications. The devices offer a wide 5V to 72V

operating input range, allowing them to withstand auto-

motive load-dump conditions while consuming only

68µA. The MAX6791–MAX6794 are dual-output regula-

tors capable of supplying up to 150mA per output. The

MAX6795/MAX6796 offer a single output capable of

delivering up to 300mA. These devices offer standard

output-voltage options (5V, 3.3V, 2.5V, or 1.8V) and can

be adjusted to any voltage from 1.8V to 11V. The

MAX6791–MAX6794 also offer a fixed 5V output.

All devices feature a push-pull or open-drain, active-low

RESET output with a fixed output reset threshold that is

92.5%/87.5% of the regulator output OUT/OUT1. The

reset output asserts low when OUT/OUT1 drops below

the reset threshold and remains low for the fixed or

capacitor-adjustable reset timeout period after

OUT/OUT1 exceeds the reset threshold.

The MAX6791–MAX6796 provide a watchdog input that

monitors a pulse train from the microprocessor (µP) and

generates reset pulses if the watchdog input remains

high or low for a duration longer than the watchdog

timeout period. All devices are available with either a

fixed watchdog timeout period of 280ms (min) or a peri-

od adjustable with an external capacitor. The

MAX6791/MAX6792 feature a windowed watchdog

timeout period with selectable window ratio. The watch-

dog feature can be disabled.

The MAX6791–MAX6794 provide dual enable inputs

(ENABLE1 and ENABLE2) that control each regulator

independently. The single-output MAX6795/MAX6796

feature one enable input (ENABLE).

All devices include a hold input (HOLD) that aids the

implementation of a self-holding circuit without requir-

ing external components. Once the regulator is

enabled, setting HOLD low forces the regulator to

remain on even if ENABLE/ENABLE1 is subsequently

set low. Releasing HOLD shuts down the regulator.

The MAX6791–MAX6796 are available in a small, ther-

mally enhanced TQFN package. The 5mm x 5mm

package dissipates up to 2.7W, supporting continuous

regulator operation during high ambient temperatures,

high battery voltage, and high load-current conditions.

The MAX6791–MAX6796 are specified for a -40°C to

+125°C operating temperature range.

For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at

1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.

Linear Regulators with Supervisory Functions

Automotive

________________________________________________________________ Maxim Integrated Products

General Description

High-Voltage, Micropower, Single/Dual

Applications

♦ Low 68µA Quiescent Current

♦ Wide 5V to 72V Supply Voltage Range

♦ Output Current

♦ Low Dropout Voltage

♦ Fixed Output-Voltage Options: 5V, 3.3V, 2.5V,

♦ ENABLE and HOLD Functionality

♦ RESET Output: Open Drain or Push-Pull

♦ Internally Fixed (35µs, 3.125ms, 12.5ms, 50ms, or

♦ Internally Fixed or Capacitor-Adjustable

♦ Windowed (Minimum/Maximum) Watchdog Timer

♦ Watchdog Disable Feature

♦ Thermal, Short-Circuit, and Output Overvoltage

♦ Fully Specified from -40°C to +125°C

♦ Small, Thermally Enhanced, 5mm x 5mm TQFN

+Denotes lead-free package.

For tape-and-reel, add a T after the “+.” Tape-and-reel are

offered in 2.5k increments. The first placeholder “_” designates

preset output-voltage option and preset reset threshold level;

see Table 1. The second placeholder “_ ” designates the reset

timeout period; see Table 2. For example, the MAX6791TPSD3+

indicates a 3.3V output voltage with a reset threshold of 87.5%

at nominal voltage and a 50ms reset timeout period. Samples

are generally held in stock. Nonstandard versions require a 2.5k

minimum order quantity.

Typical Application Circuit, Pin Configurations, and Selector

Guide appear at end of data sheet.

M A X6 7 9 1 TP _D _+

M A X6 7 9 2 TP _D _+

M A X6 7 9 3 TP _ D _+

M A X6 7 9 4 TP _ D _+

M A X6 7 9 5 TP _ D _+

M A X6 7 9 6 TP _D _+

1.8V, or Adjustable Output (from 1.8V to 11V)

200ms) or Capacitor-Adjustable Reset Timeout

Periods

Watchdog Timeout Periods

Options (MAX6791/MAX6792)

Protection

Single Output Up to 300mA

Dual Outputs Up to 150mA per Output

420mV (typ) at 100mA (Single)

840mV (typ) at 100mA (Dual)

PART

-40°C to +125°C

Ordering Information

RANGE

TEMP

PIN-

PACKAGE

20 TQFN

Features

T2055-4

CODE

PKG

Related parts for MAX6793TPLD2+

MAX6793TPLD2+ Summary of contents

Page 1

... The MAX6791–MAX6796 are specified for a -40°C to +125°C operating temperature range. Automotive ________________________________________________________________ Maxim Integrated Products For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at 1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com. ♦ Low 68µA Quiescent Current ♦ ...

Page 2

High-Voltage, Micropower, Single/Dual Linear Regulators with Supervisory Functions ABSOLUTE MAXIMUM RATINGS (All pins referenced to GND, unless otherwise noted GND ...............................................................-0.3V to +80V ENABLE, ENABLE1, ENABLE2, PFI, GATEP to GND ...........................................-0.3V to (IN + 0.3V) GATEP to IN ...

Page 3

... SET/SET1 Threshold Voltage Adjustable Output Voltage Dual-Mode™ SET Threshold SET/SET1 Input Current Dropout Voltage Guaranteed Output Current (Note 4) Dual Mode is a trademark of Maxim Integrated Products, Inc. _______________________________________________________________________________________ = T = -40°C to +125°C, unless otherwise noted. Typical values are CONDITIONS L/M, I ...

Page 4

High-Voltage, Micropower, Single/Dual Linear Regulators with Supervisory Functions ELECTRICAL CHARACTERISTICS (continued 14V 1µ 10µ OUT (Note 1) PARAMETER SYMBOL Short-Circuit Output Current Limit (Note 4) Thermal-Shutdown Temperature Thermal-Shutdown Hysteresis Line Regulation ...

Page 5

High-Voltage, Micropower, Single/Dual Linear Regulators with Supervisory Functions ELECTRICAL CHARACTERISTICS (continued 14V 1µ 10µ OUT (Note 1) PARAMETER SYMBOL RESET OUTPUT Reset Threshold (Preset Output Voltage) Reset Threshold (Adjustable Output Voltage) ...

Page 6

High-Voltage, Micropower, Single/Dual Linear Regulators with Supervisory Functions ELECTRICAL CHARACTERISTICS (continued 14V 1µ 10µ OUT (Note 1) PARAMETER SYMBOL LOGIC INPUT (WDS0, WDS1, WD-DIS, WDI) Input-Voltage Low Input-Voltage High Input Current ...

Page 7

High-Voltage, Micropower, Single/Dual Linear Regulators with Supervisory Functions ( 14V 0.1µ 10µ OUT SUPPLY CURRENT vs. SUPPLY VOLTAGE MAX6791 NO LOAD ...

Page 8

High-Voltage, Micropower, Single/Dual Linear Regulators with Supervisory Functions ( 14V 0.1µ 10µ OUT NORMALIZED RESET TIMEOUT PERIOD vs. TEMPERATURE 1.03 MAX6796 1.02 1.01 1.00 0.99 0.98 -40 -25 -10 ...

Page 9

High-Voltage, Micropower, Single/Dual Linear Regulators with Supervisory Functions ( 14V 0.1µ 10µ OUT RESET TIMEOUT PERIOD vs. C CSRT 10,000 1000 100 10 1 0.1 0.0001 0.001 0.01 C ...

Page 10

High-Voltage, Micropower, Single/Dual Linear Regulators with Supervisory Functions ( 14V 0.1µ 10µ OUT LOAD-TRANSIENT RESPONSE I OUT1 OUT1 AC-COUPLED MAX6792 OUT1 = 5V C OUT 1ms/div PIN MAX6791/ MAX6793/ ...

Page 11

High-Voltage, Micropower, Single/Dual Linear Regulators with Supervisory Functions PIN MAX6791/ MAX6793/ MAX6795/ MAX6792 MAX6794 MAX6796 9 — — 10 — — 13, 14 13, 14 — — 17, 18 ...

Page 12

High-Voltage, Micropower, Single/Dual Linear Regulators with Supervisory Functions PIN MAX6791/ MAX6793/ MAX6795/ MAX6792 MAX6794 MAX6796 10, 13, 14, — — — — — 3 — — 20 — — — Detailed Description The MAX6791–MAX6796 ultra-low-quiescent-current, single-/dual-output, ...

Page 13

High-Voltage, Micropower, Single/Dual Linear Regulators with Supervisory Functions ENABLE2 IN GATEP ENABLE1 CONTROL LOGIC HOLD ______________________________________________________________________________________ MAX6791/MAX6792 THERMAL PROTECTION OVERCURRENT PROTECTION 1.23V 124mV RESET TIMEOUT 1.138V OR RESET 1.076V WATCHDOG TIMEOUT GND PFI Functional Diagrams OUT2 OUT1 SET1 RESET CSRT ...

Page 14

High-Voltage, Micropower, Single/Dual Linear Regulators with Supervisory Functions ENABLE2 IN GATEP ENABLE1 CONTROL LOGIC HOLD 14 ______________________________________________________________________________________ Functional Diagrams (continued) MAX6793/MAX6794 THERMAL PROTECTION OVERCURRENT PROTECTION 1.23V 124mV RESET TIMEOUT 1.138V OR RESET 1.076V WATCHDOG TIMEOUT GND PFI OUT2 OUT1 SET1 ...

Page 15

High-Voltage, Micropower, Single/Dual Linear Regulators with Supervisory Functions IN GATEP ENABLE CONTROL LOGIC HOLD ______________________________________________________________________________________ Functional Diagrams (continued) THERMAL MAX6795/MAX6796 PROTECTION OVERCURRENT PROTECTION 1.23V 124mV RESET TIMEOUT 1.138V OR RESET 1.076V WATCHDOG TIMEOUT GND PFI OUT SET RESET CSRT WDI ...

Page 16

High-Voltage, Micropower, Single/Dual Linear Regulators with Supervisory Functions Watchdog Timer The MAX6791–MAX6796 include a watchdog timer that asserts RESET if the watchdog input (WDI) does not toggle high to low or low to high within the watch- dog timeout period ...

Page 17

High-Voltage, Micropower, Single/Dual Linear Regulators with Supervisory Functions Applications Information Output Voltage Selection The MAX6791–MAX6796 feature dual-mode operation: these devices operate in either a preset voltage mode or an adjustable mode. In preset voltage mode, internal trimmed feedback resistors set ...

Page 18

High-Voltage, Micropower, Single/Dual Linear Regulators with Supervisory Functions Selecting Watchdog Timeout Period The watchdog timeout period is adjustable to accommo- date a variety of µP applications. With this feature, the watchdog timeout can be optimized for software execu- tion. The ...

Page 19

High-Voltage, Micropower, Single/Dual Linear Regulators with Supervisory Functions watchdog re-enables immediately when any of these conditions are removed (as long as the RESET is not asserted). Note that the output current threshold limit includes hysteresis so that output current must ...

Page 20

High-Voltage, Micropower, Single/Dual Linear Regulators with Supervisory Functions Table 1. Preset Output Voltage and Reset Threshold PART OUTPUT RESET THRESHOLD SUFFIX (_) VOLTAGE (V) L 5.0 M 5.0 T 3.3 S 3.3 Z 2.5 Y 2.5 W 1.8 V 1.8 ...

Page 21

... Table 5. Standard Version Part Number OUTPUT PART NUMBER VOLTAGE (V) MAX6791TPLD2+ 5.0 MAX6791TPSD2+ 3.3 MAX6792TPLD2+ 5.0 MAX6792TPSD2+ 3.3 MAX6793TPLD2+ 5.0 MAX6793TPSD2+ 3.3 MAX6794TPLD2+ 5.0 MAX6794TPSD2+ 3.3 MAX6795TPLD2+ 5.0 MAX6795TPSD2+ 3.3 MAX6796TPLD2+ 5.0 MAX6796TPSD2+ 3.3 +Denotes lead-free package. PART RESET OUTPUT MAX6791TP_D_ Open drain ...

Page 22

High-Voltage, Micropower, Single/Dual Linear Regulators with Supervisory Functions OUT1 SET1 CSWT PFO CSRT 22 ______________________________________________________________________________________ 12V BATT GATEP IN IN ENABLE1 PFI ENABLE2 MAX6791/MAX6792 GND RESET HOLD WDS1 WDS0 RESET I/O I/O TXD V CC µC INT RXD Typical Application ...

Page 23

High-Voltage, Micropower, Single/Dual Linear Regulators with Supervisory Functions TOP VIEW PFI MAX6791/MAX6792 GATEP 19 ENABLE1 THIN QFN 5mm x 5mm TOP VIEW ______________________________________________________________________________________ TOP VIEW ...

Page 24

High-Voltage, Micropower, Single/Dual Linear Regulators with Supervisory Functions (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information go to www.maxim-ic.com/packages.) 24 ______________________________________________________________________________________ Package Information ...

Page 25

... Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 ____________________ 25 © 2006 Maxim Integrated Products Package Information (continued registered trademark of Maxim Integrated Products, Inc ...

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