MAX8688ALETG+ Maxim Integrated Products, MAX8688ALETG+ Datasheet - Page 11

• Manufacturer Part Number: MAX8688ALETG+
• Description: IC PWR SUPPLY CTRLR/MONTR 24TQFN
• Manufacturer: Maxim Integrated Products

Specifications of MAX8688ALETG+

• Applications: Power Supply Controller/Monitor
• Voltage - Supply: 3 V ~ 3.6 V
• Current - Supply: 6.7mA
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 24-TQFN Exposed Pad
• Supply Voltage (max): 3.6 V
• Supply Voltage (min): 3 V
• Operating Temperature Range: - 40 C to + 85 C
• Mounting Style: SMD/SMT
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Voltage - Input: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

Since the reference voltage input is provided by the
MAX8688, the REFIN mode provides complete control
of the POL in terms of soft-start, soft-stop, and margin-
ing transitions. It may be noted that the slew rates dur-
ing soft-start (t
(VOUT_TRANSITION_RATE) should be programmed
with POL current-limit consideration. An excessively
fast slew rate causes the POL to trip due to overcurrent.
A general guideline for setting the output-voltage slew
rate is as follows:
Figure 3. Typical System Application—REFIN Mode
0.1µF
CONTROLLER
SYSTEM
3.3V
CLKOUT
SLEW RATE
IRQ
ON_RISE
______________________________________________________________________________________
Digital Power-Supply Controller/Monitor
A1/SCLE
A2/SDAE
A3/ONOFF
SCL
SDA
RST
FLT
CLKIO
≤
) and during margining
(
I
LIMIT
C
OUT
−
DVDD
DGND
PMBus COMMAND AND
I
LOAD
STATUS REGISTERS
CONTROLLER
SMBus
)
POWER MONITOR
MAXQ µC
MAX8688
INTERNAL REFERENCE
TEMP SENSOR
ADC
DAC
where C
put, I
POL, and I
On receipt of either an OPERATION OFF command or a
turn-off signal from A3/ONOFF, the MAX8688 com-
mences the shutdown operation that has been pro-
grammed for the POL being controlled. After the
programmed t
down the output voltage to zero precisely in the pro-
grammed t
ENOUT output.
with PMBus Interface
AGND
AVDD
LOAD
OUT
OFF_FALL
LIMIT
is the load current being delivered by the
S1
is the output capacitance on the POL out-
200Ω
200Ω
OFF_DELAY
is the current-limit setting of the POL.
DACOUT
ENOUT
ISN_C
time, and deasserts its open-drain
RS_C
REFO
ISN+
ISN-
RS+
RS-
time, the MAX8688 ramps
0.1µF
1µF
REFIN
EN
VO+
R
SENSE
LOAD
POL
VO-
V
V
IN+
IN-
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