MAX8688BHETG+ Maxim Integrated Products, MAX8688BHETG+ Datasheet - Page 8

• Manufacturer Part Number: MAX8688BHETG+
• Description: IC PWR SUPPLY CTRLR/MONTR 24TQFN
• Manufacturer: Maxim Integrated Products

Specifications of MAX8688BHETG+

• 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

Digital Power-Supply Controller/Monitor
with PMBus Interface
8
PIN
1, 3
8, 9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
_______________________________________________________________________________________
—
2
4
5
6
7
A3/ONOFF
DACOUT
A2/SDAE
A1/SCLE
ENOUT
CLKIO
NAME
DGND
AGND
ISN_C
DVDD
AVDD
REFO
RS_C
ISN+
SDA
N.C.
RS+
ISN-
RST
SCL
FLT
RS-
EP
Digital Power-Supply Input (3.3V, typ). Connect AVDD to DVDD externally. Connect a 0.1µF capacitor from
DVDD to DGND.
Digital Ground. Connect AGND to DGND externally close to the device.
Clock Input/Output. User-configurable clock input/output signal. The system controller can provide a clock
input to synchronize the time bases of multiple MAX8688 devices. Alternatively, a MAX8688 can provide a
1MHz output clock to other MAX8688s for synchronization. See the MFR_MODE (D1h) section.
Active-Low SMBus Interface and Device Reset Line. Active-low logic input. See the RST Operation section.
SMBus Data Line
SMBus Clock Line
No Connection. Not internally connected.
On/Off Signal Open-Drain Output. Typically used to turn on/off a POL power supply under the PMBus
command or A3/ONOFF control. See the ENOUT Operation and MFR_MODE (D1h) sections.
Fault Output, Active-Low Open-Drain Output. Typically connected to system controller/master interrupt
input.
Dual-Functioned Three-State MAX8688 Slave Address Identifier (MSB) and POL On/Off Control using the
MFR_MODE Command. See the MAX8688 Address Assignment and A3/ONOFF Operation sections.
Dual-Functioned Three-State MAX8688 Slave Address Identifier and EEPROM I
MAX8688 Address Assignment and External EEPROM Interface sections.
Dual-Functioned Three-State MAX8688 Slave Address Identifier (LSB) and EEPROM I
the MAX8688 Address Assignment and External EEPROM Interface sections.
Analog Voltage Output of Internal 12-Bit DAC. Connect DACOUT to REFIN or FB of the DC-DC module with
high impedance in shutdown.
Analog Ground. Connect AGND to DGND externally close to the device.
Analog Power-Supply Input (3.3V, typ). Connect AVDD to DVDD externally. Connect 0.1µF capacitor from
AVDD to AGND.
Buffered Reference Output. Connect a 1µF capacitor from REFO to ground.
Filter Capacitor Connection for V
Differential Remote-Sense Input Return of the DC-DC Output Voltage. Connect RS- to the return terminal at
the load.
Differential Remote-Sense Input of DC-DC Output Voltage. Connect RS+ to the load terminal where the
output must be regulated.
Differential-Sense Input Return of DC-DC Output Current. Connect ISN- to the negative end of the current-
sense resistor (Figure 3). In case of DCR sensing, connect ISN- to the return terminal of filter capacitor C
(Figure 7).
Differential-Sense Input of DC-DC Output Current. Connect ISN+ to the positive end of the current-sense
resistor. In case of DCR sensing, connect ISN+ to the junction of filter resistor and capacitor (R
(Figure 7).
Filter Capacitor Connection for I
Exposed Pad. Connect EP to the AGND plane for the POL for best temperature measurement performance.
Do not use EP as the main ground connection.
SENSE
SENSE
Amplifier
Amplifier
FUNCTION
2
C Data Line. See the
Pin Description
2
C Clock Line. See
S
and C
S
)
S