Datasheet

ManualsBrandsTEXAS INSTRUMENTS ManualsPMICsPMIC - system monitor Reset/power-on reset SOIC 8

TL7757

SUPPLY-VOLTAGE SUPERVISOR

AND PRECISION VOLTAGE DETECTOR

SLVS041I − SEPTEMBER 1991 − REVISED AUGUST 2003

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

D Power-On Reset Generator

D Automatic Reset Generation After Voltage

Drop

D Low Standby Current...20 µA

D RESET Output Defined When V

Exceeds 1 V

D Precision Threshold Voltage

4.55 V ±120 mV

D High Output Sink Capability . . . 20 mA

D Comparator Hysteresis Prevents Erratic

Resets

description/ordering information

The TL7757 is a supply-voltage supervisor

designed for use in microcomputer and

microprocessor systems. The supervisor

monitors the supply voltage for undervoltage

conditions. During power up, when the supply

voltage, V

, attains a value approaching 1 V, the

RESET

output becomes active (low) to prevent

undefined operation. If the supply voltage drops

below threshold voltage level (V

IT−

), the RESET

output goes to the active (low) level until the

supply undervoltage fault condition is eliminated.

ORDERING INFORMATION

PACKAGE

†

ORDERABLE

PART NUMBER

TOP-SIDE

MARKING

SOIC (D)

Tube of 75 TL7757CD

7757C

SOIC (D)

Reel of 2500 TL7757CDR

7757C

0°C to 70°C

SOT (PK) Reel of 1000 TL7757CPK T7

0 C

70 C

TO226 / TO 92 (LP)

Bulk of 1000 TL7757CLP

TL7757C

TO226 / TO-92 (LP)

Reel of 2000 TL7757CLPR

TL7757C

SOIC (D)

Tube of 75 TL7757ID

7757I

SOIC (D)

Reel of 2500 TL7757IDR

7757I

−40°C to 85°C

SOT (PK) Reel of 1000 TL7757IPK 7I

40 C

85 C

TO226 / TO 92 (LP)

Bulk of 1000 TL7757ILP

TL7757I

TO226 / TO-92 (LP)

Reel of 2000 TL7757ILPR

TL7757I

†

Package drawings, standard packing quantities, thermal data, symbolization, and PCB design

guidelines are available at www.ti.com/sc/package.

PRODUCTION DATA information is current as of publication date.

Products conform to specifications per the terms of Texas Instruments

standard warranty. Production processing does not necessarily include

testing of all parameters.

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of

Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

D PACKAGE

(TOP VIEW)

NC−No internal connection

RESET

GND

RESET

LP PACKAGE

(TOP VIEW)

PK PACKAGE

(TOP VIEW)

GND is in electrical contact with the tab.

GND

RESET

Summary of content (20 pages)

PAGE 1
TL7757 SUPPLY-VOLTAGE SUPERVISOR AND PRECISION VOLTAGE DETECTOR SLVS041I − SEPTEMBER 1991 − REVISED AUGUST 2003 D Power-On Reset Generator D Automatic Reset Generation After Voltage D D D D D D PACKAGE (TOP VIEW) Drop Low Standby Current . . . 20 µA RESET Output Defined When VCC Exceeds 1 V Precision Threshold Voltage 4.55 V ±120 mV High Output Sink Capability . . .
PAGE 2
TL7757 SUPPLY-VOLTAGE SUPERVISOR AND PRECISION VOLTAGE DETECTOR SLVS041I − SEPTEMBER 1991 − REVISED AUGUST 2003 equivalent schematic VCC RESET R2 R15 Q8 Q2 Q5 Q11 R12 R3 Q13 R5 R4 R6 Q20 Q9 Q7 R10 R8 R14 Q18 Q4 Q10 C1 Q12 R9 Q1 R7 Q21 R16 C2 Q6 Q3 Q19 Q17 R11 R1 Q15 Q14 Q16 R18 R13 GND ACTUAL DEVICE COMPONENT COUNT Transistors 27 Resistors 20 Capacitors 2 absolute maximum ratings over operating junction temperature range (unless otherwise noted)† Supply voltage range,
PAGE 3
TL7757 SUPPLY-VOLTAGE SUPERVISOR AND PRECISION VOLTAGE DETECTOR SLVS041I − SEPTEMBER 1991 − REVISED AUGUST 2003 recommended operating conditions MIN MAX 1 7 UNIT VCC Supply voltage VOH High-level output voltage 15 V IOL Low-level output current 20 mA TA Operating free-air free air temperature TL7757C TL7757I 0 70 −40 85 V °C electrical characteristics at specified free-air temperature PARAMETER TEST CONDITIONS VIT− Negative going input threshold voltage at VCC Negative-going Vhy
PAGE 4
TL7757 SUPPLY-VOLTAGE SUPERVISOR AND PRECISION VOLTAGE DETECTOR SLVS041I − SEPTEMBER 1991 − REVISED AUGUST 2003 electrical characteristics at specified free-air temperature PARAMETER TEST CONDITIONS VIT− Negative going input threshold voltage at VCC Negative-going Vhys† Hysteresis at VCC VOL Low level output voltage Low-level IOL = 20 mA, mA VCC = 4 4.3 3V IOH High level output current High-level VCC = 7 V, See Figure 1 VOH = 15 V, Vres‡ Power up reset voltage Power-up RL = 2.
PAGE 5
TL7757 SUPPLY-VOLTAGE SUPERVISOR AND PRECISION VOLTAGE DETECTOR SLVS041I − SEPTEMBER 1991 − REVISED AUGUST 2003 PARAMETER MEASUREMENT INFORMATION 15 V VCC + 5.5 V A TL7757 RESET − GND Figure 1. Test Circuit for Output Leakage Current VCC RL = 1 kΩ TL7757 Pulse Generator RESET 0.1 mF OUT CL = 100 pF (see Note A) GND NOTE A: Includes jig and probe capacitance Figure 2. Test Circuit for RESET Output Switching Characteristics 4.8 V VIT+ VCC (see Note A) 4.
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TL7757 SUPPLY-VOLTAGE SUPERVISOR AND PRECISION VOLTAGE DETECTOR SLVS041I − SEPTEMBER 1991 − REVISED AUGUST 2003 TYPICAL CHARACTERISTICS† Table of Graphs FIGURE VCC Supply voltage vs RESET output voltage 4 ICC Supply current vs Supply voltage 5 ICC Supply current vs Free-air temperature 6 VOL Low-level output voltage vs Low-level output current 7 VOL Low-level output voltage vs Free-air temperature 8 IOL Output current vs Supply voltage 9 VIT− Input threshold voltage (negative-going VCC)
PAGE 7
TL7757 SUPPLY-VOLTAGE SUPERVISOR AND PRECISION VOLTAGE DETECTOR SLVS041I − SEPTEMBER 1991 − REVISED AUGUST 2003 TYPICAL CHARACTERISTICS† SUPPLY CURRENT vs FREE-AIR TEMPERATURE 120 RL = 0 I CC − Supply Current − mA IDD 1.44 1.4 1.36 1.32 1.28 0.040 0.036 VCC = 7 V 0.032 VCC = 5.5 V 0.028 0.024 0.020 −75 TA = 25°C 110 VCC = 4.3 V VOL VOL − Low-Level Output Voltage − mV 1.52 1.48 LOW-LEVEL OUTPUT VOLTAGE vs LOW-LEVEL OUTPUT CURRENT 100 90 VCC = 1 V 80 70 60 VCC = 4.
PAGE 8
TL7757 SUPPLY-VOLTAGE SUPERVISOR AND PRECISION VOLTAGE DETECTOR SLVS041I − SEPTEMBER 1991 − REVISED AUGUST 2003 TYPICAL CHARACTERISTICS† INPUT THRESHOLD VOLTAGE (NEGATIVE-GOING VCC) vs FREE-AIR TEMPERATURE POWER-UP RESET VOLTAGE vs FREE-AIR TEMPERATURE 1000 4.6 RL = 2.2 kΩ RL = 0 950 Vres − Power-Up Reset Voltage − mV Vres VIT− VIT − Input Threshold Voltage − V 4.59 4.58 4.57 4.56 4.55 4.54 4.53 4.52 900 850 800 750 700 650 4.51 4.
PAGE 9
TL7757 SUPPLY-VOLTAGE SUPERVISOR AND PRECISION VOLTAGE DETECTOR SLVS041I − SEPTEMBER 1991 − REVISED AUGUST 2003 APPLICATION INFORMATION TYPICAL TIMING DIAGRAM VIT− VCC VIT+ VIT+ TYPICAL APPLICATION DIAGRAM VIT− 5V Vres Vres 0.
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PACKAGE OPTION ADDENDUM www.ti.
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PACKAGE OPTION ADDENDUM www.ti.
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PACKAGE OPTION ADDENDUM www.ti.com 11-Apr-2013 continues to take reasonable steps to provide representative and accurate information but may not have conducted destructive testing or chemical analysis on incoming materials and chemicals. TI and TI suppliers consider certain information to be proprietary, and thus CAS numbers and other limited information may not be available for release.
PAGE 13
PACKAGE MATERIALS INFORMATION www.ti.com 4-Mar-2009 TAPE AND REEL INFORMATION *All dimensions are nominal Device Package Package Pins Type Drawing SPQ Reel Reel Diameter Width (mm) W1 (mm) A0 (mm) B0 (mm) K0 (mm) P1 (mm) W Pin1 (mm) Quadrant TL7757CDR SOIC D 8 2500 330.0 12.4 6.4 5.2 2.1 8.0 12.0 Q1 TL7757CPK SOT-89 PK 3 1000 180.0 12.4 4.91 4.52 1.9 8.0 12.0 Q3 TL7757IDR SOIC D 8 2500 330.0 12.4 6.4 5.2 2.1 8.0 12.0 Q1 TL7757IPK SOT-89 PK 3 1000 180.
PAGE 14
PACKAGE MATERIALS INFORMATION www.ti.com 4-Mar-2009 *All dimensions are nominal Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm) TL7757CDR SOIC D 8 2500 340.5 338.1 20.6 TL7757CPK SOT-89 PK 3 1000 340.0 340.0 38.0 TL7757IDR SOIC D 8 2500 340.5 338.1 20.6 TL7757IPK SOT-89 PK 3 1000 340.0 340.0 38.
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