MAX8588ETM+T Maxim Integrated Products, MAX8588ETM+T Datasheet - Page 19

• Manufacturer Part Number: MAX8588ETM+T
• Description: IC PMIC HI EFF LOW IQ 48-TQFN
• Manufacturer: Maxim Integrated Products

Specifications of MAX8588ETM+T

• Applications: Processor
• Voltage - Supply: 2.6 V ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 48-TQFN Exposed Pad
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Current - Supply: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

V3 is a 1MHz current-mode step-down converter. It sup-
plies loads up to 500mA.
The V3 output is set by the I
between 0.7V and 1.475V in 25mV increments. The
default output voltage on power-up, and after a reset, is
1.3V. See the Serial Interface section for programming
details. See the Applications Information for instructions
on how to increase the V3 output voltage.
Under moderate to heavy loading, the V3 always operates
in a low-noise PWM mode with constant frequency and
modulated pulse width. Switching harmonics generated by
fixed-frequency operation are consistent and easily filtered.
With light loads (<30mA) and PWM3 low, V3 operates
in an enhanced-efficiency idle mode during which the
converter switches only as needed to service the load.
With PWM3 high, V3 operates in low-noise forced-PWM
mode under all load conditions.
V4 is a linear regulator that provides a fixed 1.3V output
and supplies loads up to 35mA. The power input for the
V4 and V5 linear regulators is IN45, which is typically
connected to V2. To enable V4, drive ON4 high, or drive
ON4 low for shutdown. V4 is intended to connect to
VCC_PLL.
V5 is a linear regulator that provides a fixed 1.1V output
and supplies loads up to 35mA. The power input for the
Table 1. Quiescent Operating Current in Various States
POWER MODE
OPERATING
DEEP SLEEP
STANDBY
SENSE
SLEEP
RUN
IDLE
Linear Regulators (V4, V5, and V6)
Dynamic Core for PDAs and Smartphones
All supplies on and running.
All supplies on and running, peripherals on.
All supplies on, minimal loading, peripherals monitored.
All supplies on, minimal loading, peripherals not monitored.
P W R_E N contr ol l ed vol tag es ( V 3, V 4, V 5) ar e off. V 1 and V 2 on.
All supplies off except V7. V7 biased from backup battery.
______________________________________________________________________________________
V3 (VCC_CORE) Step-Down
Forced PWM on REG3
2
C serial interface to
DC-DC Converter
High-Efficiency, Low-I
V5 (VCC_SRAM)
DESCRIPTION
V4 (VCC_PLL)
V4 and V5 linear regulators is IN45, which is typically
connected to V2. To enable V5, drive ON5 high, or drive
ON5 low for shutdown. V5 is intended to connect to
VCC_SRAM.
V6 is a linear regulator that supplies loads up to 35mA.
The V6 output voltage is programmed with the I
al interface to 0V, 1.8V, 2.5V, or 3.0V. The power-up
default for V6 is 0V. See the Serial Interface section for
details on changing the voltage. The power input for the
V6 linear regulator is IN6, which is typically connected
to V1. To enable V6, drive ON6 high, or drive ON6 low
for shutdown. V6 is intended to connect to VCC_USIM.
The V7 output is always active if V1 is enabled and in
regulation or if backup power is present. When ON1 is
high and V1 is in regulation, V7 is sourced from V1 by
an internal MOSFET switch. When ON1 is low or V1 is
out of regulation, V7 is sourced from BKBT by a second
on-chip MOSFET. V7 can supply loads up to 30mA. V7
is intended to connect to VCC_BATT on Intel CPUs.
Due to variations in system implementation, BKBT and
V7 can be utilized in different ways. See the Backup-
Battery Configurations section for information on how to
use BKBT and V7.
The MAX8588 is designed for optimum efficiency and
minimum operating current for all typical operating
modes, including sleep and deep sleep. These states
are outlined in Table 1.
V7 Always-On Output (VCC_BATT)
225µA
60µA if V1 and V2 SLEEP LDOs on;
130µA if V1, V2 step-down DC-DCs enabled
32µA if IN > DBI threshold;
4µA if IN < DBI threshold
Quiescent Operating Current
OPERATING CURRENT
TYPICAL NO-LOAD
Q
PMIC with
in Various States
V6 (VCC_USIM)
2
C seri-
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