MAX6877ETG+ Maxim Integrated Products, MAX6877ETG+ Datasheet - Page 13

• Manufacturer Part Number: MAX6877ETG+
• Description: IC SEQUENCE/SUPERVISOR 24TQFN
• Manufacturer: Maxim Integrated Products
• Type: Sequencerr

Specifications of MAX6877ETG+

• Number Of Voltages Monitored: 3
• Output: Open Drain or Open Collector
• Reset: Active Low
• Reset Timeout: Adjustable/Selectable
• Voltage - Threshold: Adjustable/Selectable
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 24-TQFN Exposed Pad
• Monitored Voltage: - 0.3 V to + 6 V
• Manual Reset: Not Resettable
• Watchdog: No Watchdog
• Supply Voltage (max): 5.5 V
• Supply Voltage (min): 2.7 V
• Supply Current (typ): 1100 uA
• Maximum Power Dissipation: 1667 mW
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Minimum Operating Temperature: - 40 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

MAX6877
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10
11
12
13
1
2
3
4
5
6
7
8
9
MAX6878
3, 16, 17,
PIN
22
10
11
12
13
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1
2
4
5
6
7
8
9
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MAX6879
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—
—
—
—
1
2
3
4
5
6
7
8
9
Dual-/Triple-Voltage, Power-Supply
Trackers/Sequencers/Supervisors
LTCH/RTR
TIMEOUT
TRK/SEQ
MARGIN
DELAY
NAME
EN/UV
SLEW
SET3
SET2
SET1
GND
N.C.
V
ABP
CC
Optional Supply Voltage Input. Connect V
supply if desired. Leave V
supplies less than UVLO to be tracked. V
100kΩ resistor.
Internal Supply Bypass Input. Bypass ABP with a 1µF capacitor to GND. ABP
maintains the device supply voltage during rapid power-down conditions.
Externally Adjusted IN_ Undervoltage Lockout Threshold. Connect SET_ to
an external resistor-divider network to set the desired undervoltage threshold
for each IN_ supply (see the Typical Application Circuit). All SET_ inputs
must be above the internal SET_ threshold (0.5V) to enable tracking or
sequencing functionality.
No Connection. Not internally connected.
Logic-Enable Input or Undervoltage Lockout Monitor Input. EN/UV must be
high (EN/UV > V
operation. OUT_ begins tracking down when EN/UV < V
to an external resistor-divider network to set the external UVLO threshold.
Ground
Tracking Startup/Sequence Delay Select Input. Connect a capacitor from
DELAY to GND to select the desired delay period before tracking is enabled
(after all SET_ inputs and EN/UV are above their respective thresholds) or
between supply sequences. Leave DELAY unconnected for the default
200µs delay period.
Slew-Rate Adjustment Input. Connect a capacitor from SLEW to GND to
select the desired OUT_ slew rate.
PG/RST Timeout Period Adjust Input. PG/RST asserts high after the timeout
period when all OUT_ exceed their IN_ referenced threshold. Connect a
capacitor from TIMEOUT to GND to set the desired timeout period. Leave
TIMEOUT unconnected for the default 200µs delay period.
Latch/Autor etr y S el ecti on Inp ut. D r i ve L TC H/RTR l ow to sel ect the l atch m od e.
C onnect L TC H/RTR to ABP or l eave unconnected to sel ect autor etr y m od e.
L TC H/RTR i s i nter nal l y p ul l ed up to ABP thr oug h a 10µA cur r ent sour ce.
Track/Sequence Select Input. Drive TRK/SEQ low to enable supply tracking
function. Connect TRK/SEQ to ABP or leave it unconnected to enable supply
sequencing. TRK/SEQ is internally pulled to ABP through a 10µA current
source.
Margin Input, Active-Low. Drive MARGIN low to enable margin mode (see
the Margin Input ( MARGIN ) section). The MARGIN functionality is disabled
(returns to normal monitoring mode) after MARGIN returns high. MARGIN is
internally pulled up to ABP through a 10µA current source.
EN_R
) to enable voltage tracking or sequencing power-up
CC
unconnected, if not used. V
FUNCTION
CC
CC
is internally pulled down by a
to an alternate (i.e., always-on)
Pin Description
EN_F
CC
allows IN_
. Connect EN/UV
13