Datasheet

ManualsBrandsMAXIM INTEGRATED ManualsPMICsPMIC - system monitor Dual voltage detector TQFN 20

General Description

The MAX16008/MAX16009 are adjustable quad window

voltage detectors in a small thin QFN package. These

devices are designed to provide a higher level of sys-

tem reliability by monitoring multiple supply voltages

and providing a fault signal when any of the voltages

exceed their overvoltage thresholds or fall below their

undervoltage thresholds.

These devices offer user-adjustable thresholds that

allow voltages to be monitored down to 0.4V. These

devices allow the upper and lower trip thresholds of

each window detector to be set externally with the use

of three external resistors.

Each monitored threshold has an independent open-

drain output for signaling a fault condition. The outputs

can be wire OR’ed together to provide a single fault

output. The open-drain outputs are internally pulled up

with a 30µA current, but can be externally driven to

other voltage levels for interfacing to other logic levels.

Both devices feature a margin input to disable the out-

puts during margin testing or any other time after

power-up operations. The MAX16009 offers a reset out-

put that deasserts after a reset timeout period after all

voltages are within their threshold specifications. The

reset timeout is internally set to 140ms (min), but can

be externally adjusted to other reset timeouts using an

external capacitor. In addition, the MAX16009 offers a

manual reset input.

All devices are offered in a 4mm x 4mm TQFN package

and are fully specified from -40°C to +125°C.

Applications

Storage Equipment

Networking/Telecommunications Equipment

Multivoltage ASICs

Servers

Features

♦ Monitor Four Undervoltage/Overvoltage Conditions

♦ 1.5% Accuracy Over Temperature

♦ User-Adjustable Thresholds (Down to 0.4V)

♦ Open-Drain Outputs with Internal Pullups Reduce

the Number of External Components

♦ Manual Reset Input (MAX16009)

♦ Margin Enable Input

♦ Fixed or Adjustable RESET Timeout (MAX16009)

♦ Guaranteed Correct Output Logic State Down to

= 1V

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

♦ Small, 4mm x 4mm TQFN Package

MAX16008/MAX16009

Low-Voltage, High-Accuracy, Quad Window

Voltage Detectors in Thin QFN

________________________________________________________________ Maxim Integrated Products 1

PART TEMP RANGE PIN-PACKAGE

MAX16008TP+ -40°C to +125°C 20 TQFN

MAX16009TG+ -40°C to +125°C 24 TQFN

Ordering Information

19-3869; Rev 1; 1/11

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.

GND

UVIN1 UVOUT1

OVIN1

UVIN2

OVIN2

UVIN3

OVIN3

2.5V

3.5V

1.8V

1.5V

UVIN4

OVIN4

UVOUT2

UVOUT3

UVOUT4

OVOUT1

OVOUT2

OVOUT3

OVOUT4

μC

RESET

MAX16009

GND

Typical Operating Circuit

Pin Configurations and Selector Guide appear at end of data

sheet.

+Denotes a lead(Pb)-free/RoHS-compliant package.

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

offered in 2.5k increments.

Summary of content (13 pages)

PAGE 1
9-3869; Rev 1; 1/11 Low-Voltage, High-Accuracy, Quad Window Voltage Detectors in Thin QFN Features The MAX16008/MAX16009 are adjustable quad window voltage detectors in a small thin QFN package. These devices are designed to provide a higher level of system reliability by monitoring multiple supply voltages and providing a fault signal when any of the voltages exceed their overvoltage thresholds or fall below their undervoltage thresholds.
PAGE 2
MAX16008/MAX16009 Low-Voltage, High-Accuracy, Quad Window Voltage Detectors in Thin QFN ABSOLUTE MAXIMUM RATINGS VCC, OVOUT_, UVOUT_, RESET, UVIN_, OVIN_ to GND .........................................-0.3V to +6V MARGIN, MR, TOL, SRT to GND................-0.3V to (VCC + 0.3V) Input/Output Current (RESET, MARGIN, SRT, MR, UVOUT_, OVOUT_) .......±20mA Continuous Power Dissipation (TA = +70°C) 20-Pin Thin QFN (derate 16.9mW/°C above +70°C) ....1355mW 24-Pin Thin QFN (derate 16.9mW/°C above +70°C) ....
PAGE 3
Low-Voltage, High-Accuracy, Quad Window Voltage Detectors in Thin QFN (VCC = 2.0V to 5.5V, TOL = GND, TA = -40°C to +125°C, unless otherwise specified. Typical values are at VCC = 3.3V, TA = +25°C.) (Note 1) PARAMETER RESET Output-Voltage Low SYMBOL VOL CONDITIONS MIN TYP 0.30 VCC = 2.5V, ISINK = 6mA, RESET asserted 0.30 VCC = 1.2V, ISINK = 50µA, RESET asserted RESET Output-Voltage High VOH MR Input-Voltage Low VIL MR Input-Voltage High VIH MAX VCC = 3.
PAGE 4
Typical Operating Characteristics (VCC = 3.3V, TA = +25°C, unless otherwise noted.) 45 40 35 VCC = 5V 0.425 50 45 VCC = 3.3V 40 VCC = 2.5V 0.400 0.375 35 0.350 30 30 2.5 3.0 3.5 4.0 4.5 5.0 1.5 -40 -25 -10 5 20 35 50 65 80 95 110 125 5.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 SUPPLY VOLTAGE (V) TEMPERATURE (°C) SUPPLY VOLTAGE (V) UVIN_/OVIN_ THRESHOLD vs. TEMPERATURE OUTPUT VOLTAGE vs. SINK CURRENT MAXIMUM TRANSIENT DURATION vs. INPUT OVERDRIVE 0.44 0.43 100 0.42 75 VOUT_ (mV) 0.
PAGE 5
Low-Voltage, High-Accuracy, Quad Window Voltage Detectors in Thin QFN RESET TIMEOUT PERIOD vs.
PAGE 6
Low-Voltage, High-Accuracy, Quad Window Voltage Detectors in Thin QFN MAX16008/MAX16009 Pin Description 6 MAX16008 MAX16009 PIN 1 1 UVIN3 Undervoltage Threshold Input 3. When the voltage on UVIN3 falls below its threshold, UVOUT3 asserts low. 2 2 OVIN3 Overvoltage Threshold Input 3. When the voltage on OVIN3 rises above its threshold, OVOUT3 asserts low. 3 3 UVIN4 Undervoltage Threshold Input 4. When the voltage on UVIN4 falls below its threshold, UVOUT4 asserts low.
PAGE 7
Low-Voltage, High-Accuracy, Quad Window Voltage Detectors in Thin QFN MAX16008 MAX16009 PIN 13 16 UVOUT2 Active-Low Undervoltage Output 2. When the voltage at UVIN2 falls below its threshold, UVOUT2 asserts low and stays asserted until the voltage at UVIN2 exceeds its threshold. The open-drain output has a 30µA internal pullup to VCC. 14 17 OVOUT1 Active-Low Overvoltage Output 1.
PAGE 8
MAX16008/MAX16009 Low-Voltage, High-Accuracy, Quad Window Voltage Detectors in Thin QFN (MR) (SRT) VCC VCC TIMING RESET CIRCUIT (RESET) UVIN1 UVOUT1 OVIN1 OVOUT1 UVIN2 UVOUT2 OUTPUT DRIVER OVOUT2 OVIN2 UVIN3 UVOUT3 OVOUT3 OVIN3 UVIN4 UVOUT4 OVOUT4 VCC OVIN4 VCC UNDERVOLTAGE LOCKOUT MAX16008/ MAX16009 VCC REFERENCE ( ) MAX16009 ONLY MARGIN Figure 1.
PAGE 9
Low-Voltage, High-Accuracy, Quad Window Voltage Detectors in Thin QFN The MAX16008/MAX16009 are adjustable quad window voltage detectors in a small thin QFN package. These devices are designed to provide a higher level of system reliability by monitoring multiple supply voltages and providing a fault signal when any of the voltages exceeds its overvoltage threshold or falls below its undervoltage threshold. These devices offer user-adjustable thresholds that allow voltages to be monitored down to 0.4V.
PAGE 10
MAX16008/MAX16009 Low-Voltage, High-Accuracy, Quad Window Voltage Detectors in Thin QFN Use the following formulas to calculate the error: ⎛ R R ⎞ IIB ⎜ R1 + 1 3 ⎟ R2 + R3 ⎠ ⎝ EUV (%) = x 100 VTRIPLOW I (R + (2 x R1)) x 100 EOV (%) = IB 2 VTRIPHIGH where EUV and EOV are the undervoltage and overvoltage error (in %), respectively. 2) Calculate R3 based on RTOTAL and the desired upper trip point: The MAX16008/MAX16009 are powered directly from the system voltage supply.
PAGE 11
Low-Voltage, High-Accuracy, Quad Window Voltage Detectors in Thin QFN RESET Output (MAX16009 Only) RESET asserts low when the voltage on any of the UVIN_ inputs falls below its respective threshold, the voltage on any of the OVIN_ inputs goes above its respective threshold, or MR is asserted. RESET remains asserted for the reset timeout period after all monitored UVIN_ inputs exceed their respective thresholds, all OVIN_ inputs fall below their respective thresholds, and MR is deasserted (see Figure 6).
PAGE 12
OVOUT_, and RESET) regardless of the voltage at any monitored input. The state of each output does not change while MARGIN = GND. While MARGIN is low, the IC continues to monitor all voltages. When MARGIN is deasserted, the outputs go to their monitored states after a short propagation delay. The MARGIN input is internally pulled up to VCC. Leave unconnected or connect to VCC if unused. Power-Supply Bypassing The MAX16008/MAX16009 operate from a 2.0V to 5.5V supply.
PAGE 13
Low-Voltage, High-Accuracy, Quad Window Voltage Detectors in Thin QFN PAGES CHANGED REVISION NUMBER REVISION DATE 0 10/05 Initial release — 1 1/11 Added soldering temperature in the Absolute Maximum Rating section and added symbol in Electrical Characteristics table 2 DESCRIPTION Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied.