Rainbow Electronics MAX1587A User Manual
General Description
The MAX1586/MAX1587 power-management ICs are
optimized for devices using Intel X-Scale™ microprocessors, including third-generation smart cell
phones, PDAs, internet appliances, and other portable
devices requiring substantial computing and multimedia capability at low power.
The ICs integrate seven high-performance, low-operatingcurrent power supplies along with supervisory and management functions. Regulator outputs include three stepdown DC-DC outputs, three linear regulators, and a
seventh always-on output. DC-DC converter outputs
power I/O, DRAM, and the CPU core. The I/O supply can
be preset to 3.3V or 3.0V, or can be adjusted to other values. The DRAM supply on the MAX1586A and MAX1587A
is preset for 1.8V or 2.5V, while the MAX1586B DRAM
supply is preset for 3.3V or 2.5V. The DRAM supply on all
parts can also be adjusted with external resistors. The
CPU core supply is serial programmed for dynamic voltage management. Linear-regulated outputs are provided
for SRAM, PLL, and USIM supplies.
To minimize sleep-state quiescent current, critical
power supplies have bypass “sleep” LDOs that can be
activated to minimize battery drain when output current
is very low. Other functions include separate on/off control for all DC-DC converters, low-battery and dead-battery detection, a reset and power-OK output, a backupbattery input, and a two-wire serial interface.
All DC-DC outputs use fast, 1MHz PWM switching and
small external components. They operate with fixed-frequency PWM control and automatically switch from
PWM to skip-mode operation at light loads to reduce
operating current and extend battery life. The core output is capable of operating in forced-PWM mode at all
loads to minimize ripple and noise. A 2.6V to 5.5V input
voltage range allows 1-cell lithium-ion (Li+), 3-cell
NiMH, or a regulated 5V input. The MAX1587 is available in a tiny 6mm x 6mm, 40-pin thin QFN package.
The MAX1586 features an additional linear regulator
(V6) for VCC_USIM and low-battery and dead- battery
comparators. The MAX1586 is available in a 7mm x
7mm, 48-pin thin QFN package.
Applications
PDA, Palmtop, and Wireless Handhelds
Third-Generation Smart Cell Phones
Internet Appliances and Web-Books
Features
♦ Six Regulators in One Package:
Step-Down DC-DC for I/O at 1.3A
Step-Down DC-DC for Memory at 0.9A
Step-Down Serial-Programmed DC-DC for CORE
Three LDO Outputs for SRAM, PLL, and USIM
Always-On Output for VCC_BATT
♦ Low Operating Current
60µA in Sleep Mode (Sleep LDOs On)
130µA with DC-DCs On (Core Off)
200µA All Regulators On, No Load
5µA Shutdown Current
♦ Optimized for X-Scale Processors
♦ Backup-Battery Input
♦ Separate ON Controls for Any Desired Power
Sequencing
♦ 1MHz PWM Switching Allows Small External
Components
♦ Tiny 6mm x 6mm, 40-Pin and 7mm x 7mm, 48-Pin
Thin QFN Packages
MAX1586A/MAX1586B/MAX1587A
High-Efficiency, Low-I
Q
PMICs with
Dynamic Core for PDAs and Smart Phones
________________________________________________________________ Maxim Integrated Products 1
Ordering Information
MAX1586
MAX1587
V1
V2
V3
V4
V5
V6
V7
VCC_IO 3.3V
VCC_MEM 2.5V
VCC_CORE
0.8V TO 1.3V
VCC_USIM
0V, 1.8V, 3.0V
MAIN BATTERY
VCC_PLL 1.3V
VCC_SRAM 1.1V
BACKUP
BATTERY
IN
BKBT
MR
RSO
VCC_BATT
POK
nRESET
nVCC_FAULT
SYS_EN
PWR_EN
ON1-2
ON3-6
nBATT_FAULT
DBO
Simplified Functional Diagram
19-3089; Rev 1; 12/03
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
EVALUATION KIT
AVAILABLE
Pin Configurations appear at end of data sheet.
PART
PIN-PACKAGE
MAX1586AETM
48 Thin QFN 7mm x 7mm
MAX1586BETM
48 Thin QFN 7mm x 7mm
MAX1587AETL
40 Thin QFN 6mm x 6mm
X-Scale is a trademark of Intel Corp.
TEMP RANGE
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
MAX1586A/MAX1586B/MAX1587A
High-Efficiency, Low-IQPMICs with
Dynamic Core for PDAs and Smart Phones
2 _______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS
(VIN= 3.6V, V
BKBT
= 3.0V, V
LBI
= 1.1V, V
DBI
= 1.35V, circuit of Figure 5, TA = 0°C to +85°C, unless otherwise noted. Typical values
are at T
A
= +25°C.)
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
IN, IN45, IN6, MR, LBO, DBO, RSO, POK, SCL, SDA,
BKBT, V7, SLP, SRAD, PWM3 to GND...............-0.3V to +6V
REF, CC_, ON_, FB_, DBI, LBI, V1, V2, RAMP, BYP,
MR to GND ...........................................-0.3V to (V
IN
+ 0.3V)
PV1, PV2, PV3, SLPIN to IN...................................-0.3V to +0.3V
V4, V5 to GND ..........................................-0.3V to (V
IN45
+ 0.3V)
V6 to GND ..................................................-0.3V to (V
IN6
+ 0.3V)
PV1 to PG1 ............................................................-0.3V to +6.0V
PV2 to PG2 ............................................................-0.3V to +6.0V
PV3 to PG3 ............................................................-0.3V to +6.0V
LX1 Continuous Current....................................-1.30A to +1.30A
LX2 Continuous Current........................................-0.9A to +0.9A
LX3 Continuous Current........................................-0.5A to +0.5A
PG1, PG2, PG3 to GND.........................................-0.3V to +0.3V
V1, V2, V4, V5, V6 Output Short-Circuit Duration.......Continuous
Continuous Power Dissipation (T
A
= +70°C)
6mm x 6mm 40-Pin Thin QFN
(derate 26.3mW/°C above +70°C)...........................2105mW
7mm x 7mm 48-Pin Thin QFN
(derate 26.3mW/°C above +70°C)...........................2105mW
Operating Temperature Range ...........................-40°C to +85°C
Junction Temperature......................................................+150°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
PARAMETER CONDITIONS
UNITS
PV1, PV2, PV3, SLPIN, IN Supply
Voltage Range
PV1, PV2, PV3, IN, and SLPIN must connect together
externally
V
IN45, IN6 Supply Voltage Range
V
V
IN
rising
IN Undervoltage-Lockout (UVLO)
Threshold
V
IN
falling
V
32
Only V7 on, VIN below
5
REG1 and REG2 on in
switch mode, REG3 off
60
REG1 and REG2 on in
sleep mode, REG3 off
60
Quiescent Current
No load (I
PV1
+
I
PV2
+ I
PV3
+ I
IN
+
I
SLPIN
+ I
IN45
+
I
IN6
)
All REGs on
µA
ON1 = 0 4
BKBT Input Current
ON1 = IN
µA
REF Output Voltage 0 to 10µA load
V
SYNCHRONOUS-BUCK PWM REG1
FB1 = GND, 3.6V ≤ V
PV1
≤ 5.5V, load = 0 to 1200mA
REG1 Voltage Accuracy
FB1 = IN, 3.6V ≤ V
PV1
≤ 5.5V, load = 0 to 1200mA
V
FB1 Voltage Accuracy
FB1 used with external resistors, 3.6V ≤ V
PV1
≤ 5.5V,
load = 0 to 1200mA
V
FB1 Input Current FB1 used with external resistors
nA
Error-Amplifier Transconductance Referred to FB 87 µS
Load = 800mA
Dropout Voltage (Note 1)
Load = 1300mA
mV
MIN TYP MAX
2.6 5.5
2.4 5.5
2.25 2.40 2.55
2.200 2.35 2.525
MAX1586
DBI threshold V
IN
= 3.0V
MAX1587
MAX1586 130
MAX1587 130
MAX1586
MAX1587
MAX1586 225
MAX1587 200
0.8
1.2375 1.25 1.2625
3.25 3.3 3.35
2.955 3.0 3.045
1.225 1.25 1.275
180 280
293 450
100
MAX1586A/MAX1586B/MAX1587A
High-Efficiency, Low-I
Q
PMICs with
Dynamic Core for PDAs and Smart Phones
_______________________________________________________________________________________ 3
PARAMETER CONDITIONS
UNITS
I
LX1
= -180mA
P-Channel On-Resistance
I
LX1
= -180mA, V
PV1
= 2.6V
Ω
I
LX1
= 180mA
N-Channel On-Resistance
I
LX1
= 180mA, V
PV1
= 2.6V
Ω
Current-Sense Transresistance
V/A
P-Channel Current-Limit Threshold
A
PWM Skip-Mode Transition Load
Current
Decreasing load current (Note 2) 30 mA
OUT1 Maximum Output Current 2.6V ≤ V
PV1
≤ 5.5V (Note 3)
A
LX1 Leakage Current V
PV1
= 5.5V, LX1 = GND or PV1, V
ON1
= 0V
µA
SYNCHRONOUS-BUCK PWM REG2
FB2 = GND, 3.6V ≤ V
PV2
≤ 5.5V, load = 0 to 900mA
MAX1586A, MAX1587A, FB2 = IN, 3.6V ≤ V
PV2
≤ 5.5V,
load = 0 to 900mA
REG2 Voltage Accuracy
MAX1586B, FB2 = IN, 3.6V ≤ V
PV2
≤ 5.5V,
load = 0 to 900mA
V
FB2 Voltage Accuracy
FB2 used with external resistors, 3.6V ≤ V
PV2
≤ 5.5V,
load = 0 to 900mA
V
FB2 Input Current FB2 used with external resistors, V
FB2
= 1.25V
nA
Error-Amplifier Transconductance Referred to FB 87 µS
Dropout Voltage Load = 900mA (Note 1)
mV
I
LX2
= -180mA
P-Channel On-Resistance
I
LX2
= -180mA, VPV2 = 2.6V
Ω
I
LX2
= 180mA
N-Channel On-Resistance
I
LX2
= 180mA, VPV2 = 2.6V
Ω
Current-Sense Transresistance
V/A
P-Channel Current-Limit Threshold
A
PWM Skip-Mode Transition Load
Current
Decreasing load current (Note 2) 30 mA
OUT2 Maximum Output Current 2.6V ≤ V
PV2_
≤ 5.5V (Note 3)
A
LX2 Leakage Current V
PV2_
= 5.5V, LX2 = GND or PV2, V
ON2
= 0V
µA
SYNCHRONOUS-BUCK PWM REG3
REG3 from 1.3V to 1.475V, 2.6V ≤ V
PV3
_ ≤ 5.5V,
load = 0 to 400mA
REG3 Output Voltage Accuracy
REG3 from 0.70V to 1.275V, 2.6V ≤ V
PV3
_≤ 5.5V,
load = 0 to 500mA
-2
%
Error-Amplifier Transconductance 68 µS
ELECTRICAL CHARACTERISTICS (continued)
(VIN= 3.6V, V
BKBT
= 3.0V, V
LBI
= 1.1V, V
DBI
= 1.35V, circuit of Figure 5, TA = 0°C to +85°C, unless otherwise noted. Typical values
are at T
A
= +25°C.)
MIN TYP MAX
0.18 0.3
0.21 0.35
0.13 0.225
0.15 0.25
0.5
-1.55 -1.80 -2.10
1.20
-20 +0.1 +20
2.463 2.5 2.537
1.773 1.8 1.827
3.25 3.3 3.35
1.231 1.25 1.269
243 380
0.225 0.375
0.26 0.425
0.15 0.25
0.17 0.275
0.75
-1.1 -1.275 -1.50
0.9
-10 +0.1 +10
-1.5 +1.5
100
+2
MAX1586A/MAX1586B/MAX1587A
High-Efficiency, Low-IQPMICs with
Dynamic Core for PDAs and Smart Phones
4 _______________________________________________________________________________________
PARAMETER CONDITIONS
UNITS
I
LX3
= -180mA
P-Channel On-Resistance
I
LX2
= -180mA, V
PV3
= 2.6V
Ω
I
LX3
= 180mA
N-Channel On-Resistance
I
LX3
= 180mA, V
PV3
= 2.6V
Ω
Current-Sense Transresistance
V/A
P-Channel Current-Limit Threshold
A
PWM Skip-Mode Transition Load
Current
Decreasing load current (Note 2) 30 mA
OUT3 Maximum Output Current 2.6V ≤ V
PV3_
≤ 5.5V (Note 3)
A
LX3 Leakage Current V
PV3_
= 5.5V, LX3 = GND or PV2, V
ON3
= 0V
µA
LDOS V4, V5, V6, V1 SLEEP, V2 SLEEP, AND V7 OUTPUT
V4, V5, V6, V1 SLEEP, V2 SLEEP
Output Current
mA
V7 Output Current
mA
REG4 Output Voltage Load = 0.1 to 35mA
V
REG4 Noise With 1µF C
OUT
and 0.01µF C
BYP
15
µVRMS
REG5 Output Voltage Load = 0.1mA to 35mA
V
IN45, IN6 Input Voltage Range
V
0
1.8V setting, load = 0.1mA to 35mA
2.5V setting, load = 0.1mA to 35mA
REG6 Output Voltage (POR Default
to 0V, Set by Serial Input)
3.0V setting, load = 0.1mA to 35mA
V
V1 on and in regulation
V7 Output Voltage
V1 off
V
V1 and V2 SLEEP Output Voltage
Accuracy
Set to same output voltage as REG1 and REG2
%
V1 and V2 SLEEP Dropout Voltage LOAD = 20mA 75
mV
V6 Dropout Voltage M AX 1586 3V m od e, l oad = 30m A, 2.5V m od e, l oad = 30m A
mV
V7 Switch Voltage Drop LOAD = 20mA, V
BKBT
= V
V1
= 3.0V
mV
V4, V5, V6 Output Current Limit
90 mA
BKBT Leakage 1 µA
OSCILLATOR
PWM Switching Frequency
1
MHz
SUPERVISORY/MANAGEMENT FUNCTIONS
Rising
97
POK Trip Threshold (Note 4)
Falling
%
ELECTRICAL CHARACTERISTICS (continued)
(VIN= 3.6V, V
BKBT
= 3.0V, V
LBI
= 1.1V, V
DBI
= 1.35V, circuit of Figure 5, TA = 0°C to +85°C, unless otherwise noted. Typical values
are at T
A
= +25°C.)
MIN TYP MAX
0.225 0.375
0.26 0.425
0.15 0.25
0.17 0.275
1.25
-0.60 -0.7 -0.85
MAX1586
0V setti ng ( ei ther ON 6 l ow or ser i al p r og r am m ed )
0.5
-10 +0.1 +10
35
30
1.261 1.3 1.339
1.067 1.1 1.133
2.4 5.5
1.746 1.8 1.854
2.425 2.5 2.575
2.91 3.0 3.09
-3.0 +3.0
V
V1
V
BKBT
110 200
100 200
40
0.93
92 94.75
88.5 90.5 92.5
150
1.07
MAX1586A/MAX1586B/MAX1587A
High-Efficiency, Low-I
Q
PMICs with
Dynamic Core for PDAs and Smart Phones
_______________________________________________________________________________________ 5
PARAMETER CONDITIONS
MIN
TYP
MAX
UNITS
LBI = IN (for preset)
LBI Threshold (Falling)
MAX1586 hysteresis is
5% (typ)
With resistors at LBI
V
DBI = IN (for preset)
DBI Threshold (Falling)
MAX1586 hysteresis is
5% (typ)
With resistors at LBI
V
RSO Threshold (Falling) Voltage on REG7, hysteresis is 5% (typ)
V
RSO Deassert Delay
70 ms
LBI Input Bias Current MAX1586
nA
DBI Input Bias Current MAX1586 15 50 nA
Thermal-Shutdown Temperature TJ rising
°C
Thermal-Shutdown Hysteresis 15 °C
LOGIC INPUTS AND OUTPUTS
LBO, DBO, POK, RSO, SDA Output
Low Level
2.6V ≤ V7
≤ 5.5V, sinking 1mA
V
LBO, DBO, POK, RSO Output Low
Level
V7
= 1V, sinking 100µA
V
LBO, DBO, POK, RSO Output-High
Leakage Current
Pin
= 5.5V
µA
ON_, SCL, SDA, SLP, PWM3, MR,
SRAD Input High Level
2.6V ≤ V
IN
≤ 5.5V
V
ON_, SCL, SDA, SLP, PWM3, MR,
SRAD Input Low Level
2.6V ≤ V
IN
≤ 5.5V
V
ON_, SCL, SDA, SLP, PWM3, MR,
SRAD Input Leakage Current
Pin = GND, 5.5V 1 1 µA
SERIAL INTERFACE
Clock Frequency
kHz
Bus-Free Time Between START and
STOP
µs
H ol d Ti m e Rep eated S TART C ond i ti on
µs
CLK Low Period
µs
CLK High Period
µs
S etup Ti m e Rep eated S TART C ond i ti on
µs
DATA Hold Time 0µs
DATA Setup Time
ns
Maximum Pulse Width of Spikes that
Must be Suppressed by the Input
Filter of Both DATA and CLK Signals
50 ns
Setup Time for STOP Condition
µs
ELECTRICAL CHARACTERISTICS (continued)
(VIN= 3.6V, V
BKBT
= 3.0V, V
LBI
= 1.1V, V
DBI
= 1.35V, circuit of Figure 5, TA = 0°C to +85°C, unless otherwise noted. Typical values
are at T
A
= +25°C.)
3.51 3.6 3.69
0.98 1.00 1.02
3.024 3.15 3.276
1.208 1.232 1.256
2.25 2.41 2.56
61 65.5
-50 -5
+160
1.6
1.3
0.6
1.3
0.6
0.6
100
0.6
0.4
0.4
0.2
0.4
400
MAX1586A/MAX1586B/MAX1587A
High-Efficiency, Low-IQPMICs with
Dynamic Core for PDAs and Smart Phones
6 _______________________________________________________________________________________
PARAMETER CONDITIONS
MIN
MAX
UNITS
PV1, PV2, PV3, SLPIN, IN Supply
Voltage Range
PV1, PV2, PV3, IN, and SLPIN must connect together
externally
V
IN45, IN6 Supply Voltage Range
V
V
IN
rising
IN Undervoltage-Lockout (UVLO)
Threshold
V
IN
falling
V
SYNCHRONOUS-BUCK PWM REG1
FB1 = GND, 3.6V ≤ V
PV1
≤ 5.5V, load = 0 to 1300mA
REG1 Voltage Accuracy
FB1 = IN, 3.6V ≤ V
PV1
≤ 5.5V, load = 0 to 1300mA
V
FB1 Voltage Accuracy
FB1 used with external resistors, 3.6V ≤ V
PV1
≤ 5.5V,
load = 0 to 1300mA
V
FB1 Input Current FB1 used with external resistors
nA
Load = 800mA (Note 1)
Dropout Voltage
Load = 1300mA (Note 1)
mV
I
LX1
= -180mA
P-Channel On-Resistance
I
LX1
= -180mA, V
PV1
= 2.6V
Ω
I
LX1
= 180mA
N-Channel On-Resistance
I
LX1
= 180mA, V
PV1
= 2.6V
Ω
P-Channel Current-Limit Threshold
A
OUT1 Maximum Output Current 2.6V ≤ V
PV1
≤ 5.5V (Note 3)
A
LX1 Leakage Current V
PV1
= 5.5V, LX1 = GND or PV1, V
ON1
= 0V
µA
SYNCHRONOUS-BUCK PWM REG2
FB2 = GND, 3.6V ≤ V
PV2
≤ 5.5V, load = 0 to 900mA
MAX1586A, MAX1587A, FB2 = IN, 3.6V ≤ V
PV2
≤ 5.5V,
load = 0 to 900mA
REG2 Voltage Accuracy
MAX1586B, FB2 = IN, 3.6V ≤ V
PV2
≤ 5.5V,
load = 0 to 900mA
V
FB2 Voltage Accuracy
FB2 used with external resistors, 3.6V ≤ V
PV2
≤ 5.5V,
load = 0 to 900mA
V
FB2 Input Current FB2 used with external resistors, V
FB2
= 1.25V
nA
Dropout Voltage Load = 900mA (Note 1)
mV
I
LX2
= -180mA
P-Channel On-Resistance
I
LX2
= -180mA, V
PV2
= 2.6V
Ω
I
LX2
= -180mA
N-Channel On-Resistance
I
LX2
= -180mA, V
PV2
= 2.6V
Ω
P-Channel Current-Limit Threshold
A
OUT2 Maximum Output Current 2.6V ≤ V
PV2_
≤ 5.5V (Note 3)
A
LX2 Leakage Current V
PV2
= 5.5V, LX2 = GND or PV2, V
ON2
= 0V
µA
ELECTRICAL CHARACTERISTICS
(VIN= 3.6V, V
BKBT
= 3.0V, V
LBI
= 1.1V, V
DBI
= 1.35V, circuit of Figure 5, TA = -40°C to +85°C, unless otherwise noted.) (Note 5)
2.6 5.5
2.4 5.5
2.25 2.55
2.200 2.525
3.25 3.35
2.955 3.045
1.231 1.269
100
280
450
0.3
0.35
0.225
0.25
-1.55 -2.10
1.30
-10 +10
2.463 2.537
1.773 1.827
3.25 3.35
1.231 1.269
-1.1 -1.50
0.9
-10 +10
100
380
0.375
0.425
0.25
0.275
MAX1586A/MAX1586B/MAX1587A
High-Efficiency, Low-I
Q
PMICs with
Dynamic Core for PDAs and Smart Phones
_______________________________________________________________________________________ 7
PARAMETER CONDITIONS
MIN
MAX
UNITS
SYNCHRONOUS-BUCK PWM REG3
REG3 from 1.3V to 1.475V, 2.6V ≤ V
PV3_
≤ 5.5V,
load = 0 to 500mA
REG3 Output Voltage Accuracy
REG3 from 0.70V to 1.275V, 2.6V ≤ V
PV3_
≤ 5.5V, load = 0
to 500mA
-2
%
I
LX3
= -180mA
P-Channel On-Resistance
I
LX2
= -180mA, V
PV3
= 2.6V
Ω
I
LX3
= 180mA
N-Channel On-Resistance
I
LX3
= 180mA, V
PV3
= 2.6V
Ω
P-Channel Current-Limit Threshold
A
OUT3 Maximum Output Current 2.6V ≤ V
PV3_
≤ 5.5V (Note 3)
A
LX3 Leakage Current V
PV3
= 5.5V, LX3 = GND or PV2, V
ON3
= 0V
µA
LDOs V4, V5, V6, V1 SLEEP, V2 SLEEP, AND V7 OUTPUT
V4, V5, V6, V1 SLEEP, V2 SLEEP
Output Current
mA
V7 Output Current
mA
REG4 Output Voltage Load = 0.1mA to 35mA
V
REG5 Output Voltage Load = 0.1mA to 35mA
V
IN45, IN6 Input Voltage Range
V
1.8V setting, load = 0.1mA to 35mA
2.5V setting, load = 0.1mA to 35mA
REG6 Output Voltage (POR Default
to 0V, Set by Serial Input)
MAX1586
3.0V setting, load = 0.1mA to 35mA
V
V1 and V2 SLEEP Output Voltage
Accuracy
Set to same output voltage as REG1 and REG2
%
V1 and V2 SLEEP Dropout Voltage Load = 20mA
mV
V6 Dropout Voltage
mV
V7 Switch Voltage Drop Load = 20mA, V
BKBT
= V
V1
= 3.0V
mV
V4, V5, V6 Output Current Limit
mA
BKBT Leakage 1 µA
OSCILLATOR
PWM Switching Frequency
MHz
SUPERVISORY/MANAGEMENT FUNCTIONS
Rising
97
POK Trip Threshold (Note 4)
Falling
%
LBI = IN (for preset)
LBI Threshold (Falling)
MAX1586,
hysteresis is 5% (typ)
With resistors at LBI
V
DBI = IN (for preset)
DBI Threshold (Falling)
MAX1586,
hysteresis is 5% (typ)
With resistors at LBI
V
RSO Threshold (Falling) Voltage on REG7, hysteresis is 5% (typ)
V
ELECTRICAL CHARACTERISTICS (continued)
(VIN= 3.6V, V
BKBT
= 3.0V, V
LBI
= 1.1V, V
DBI
= 1.35V, circuit of Figure 5, TA = -40°C to +85°C, unless otherwise noted.) (Note 5)
M AX 1586 3V m od e, l oad = 30m A; 2.5V m od e, l oad = 30m A 200
-1.5 +1.5
-0.60 +0.85
0.4
-10 +10
35
30
1.254 1.346
1.061 1.139
2.4 5.5
1.737 1.863
2.412 2.588
2.895 3.105
-3.5 +3.5
40
0.93 1.07
92
88.5 92.5
3.51 3.69
0.98 1.02
2.993 3.307
1.208 1.256
2.25 2.60
+2
0.375
0.425
0.25
0.275
150
200
MAX1586A/MAX1586B/MAX1587A
High-Efficiency, Low-IQPMICs with
Dynamic Core for PDAs and Smart Phones
8 _______________________________________________________________________________________
PARAMETER CONDITIONS
MIN
MAX
UNITS
RSO Deassert Delay
69 ms
LBI Input Bias Current MAX1586
nA
DBI Input Bias Current MAX1586 75 nA
LOGIC INPUTS AND OUTPUTS
LBO, DBO, POK, RSO, SDA Output
Low Level
2.6V ≤ V7
≤ 5.5V, sinking 1mA
V
LBO, DBO, POK, RSO, SDA Output
Low Level
V7
= 1V, sinking 100µA
V
LBO, DBO, POK, RSO Output-High
Leakage Current
Pin
= 5.5V
µA
ON_, SCL, SDA, SLP, PWM3, MR,
SRAD Input High Level
2.6V ≤ V
IN
≤ 5.5V
V
ON_, SCL, SDA, SLP, PWM3, MR,
SRAD Input Low Level
2.6V ≤ V
IN
≤ 5.5V
V
ON_, SCL, SDA, SLP, PWM3, MR,
SRAD Input Leakage Current
Pin = GND, 5.5V 1 1 µA
SERIAL INTERFACE
Clock Frequency
kHz
Bus-Free Time Between START and
STOP
µs
Hold Time Repeated START
Condition
µs
CLK Low Period
µs
CLK High Period
µs
Setup Time Repeated START
Condition
µs
DATA Hold Time 0µs
DATA Setup Time
ns
Setup Time for STOP Condition
µs
ELECTRICAL CHARACTERISTICS (continued)
(VIN= 3.6V, V
BKBT
= 3.0V, V
LBI
= 1.1V, V
DBI
= 1.35V, circuit of Figure 5, TA = -40°C to +85°C, unless otherwise noted.) (Note 5)
62
-50
1.6
0.4
0.4
0.2
0.4
1.3
0.6
1.3
0.6
0.6
100
0.6
400
MAX1586A/MAX1586B/MAX1587A
High-Efficiency, Low-I
Q
PMICs with
Dynamic Core for PDAs and Smart Phones
_______________________________________________________________________________________ 9
Note 1: Dropout voltage is guaranteed by the P-channel switch resistance and assumes a maximum inductor resistance of 45mΩ.
Note 2: The PWM-skip-mode transition has approximately 10mA of hysteresis.
Note 3: The maximum output current is guaranteed by the following equation:
where:
and R
N
= N-channel synchronous rectifier R
DS(ON)
RP = P-channel power switch R
DS(ON)
RL = external inductor ESR
I
OUT(MAX)
= maximum required load current
f = operating frequency minimum
L = external inductor value
I
LIM
can be substituted for I
OUT(MAX)
(desired) when solving for D. This assumes that the inductor ripple current is
small relative to the absolute value.
Note 4: POK only indicates the status of supplies that are enabled (except V7). When a supply is turned off, POK does not trigger
low. When a supply is turned on, POK immediately goes low until that supply reaches regulation. POK is forced low when all
supplies (except V7) are disabled.
Note 5: Specifications to -40°C are guaranteed by design, not production tested.
D
VI RR
VI RR
OUT OUT MAX N L
IN OUT MAX N P
=
++
+ −
()
()
()
()
I
I
VD
xfxL
RR
D
xfxL
OUT
LIM
OUT
NL
max
()
()
()
=
−
−
++
−
1
2
1
1
2
ELECTRICAL CHARACTERISTICS (continued)
MAX1586A/MAX1586B/MAX1587A
High-Efficiency, Low-IQPMICs with
Dynamic Core for PDAs and Smart Phones
10 ______________________________________________________________________________________
Typical Operating Characteristics
(Circuit of Figure 5, V
IN
= 3.6V, TA = +25°C, unless otherwise noted.)
100
0.1 1 10 100 1000 10,000
90
80
70
60
50
40
REG1 3.3V OUTPUT EFFICIENCY
vs. LOAD CURRENT
MAX1586A/86B/87A toc01
LOAD CURRENT (mA)
EFFICIENCY (%)
VIN = 3.6V
VIN = 4.0V
VIN = 5.0V
100
40
0.1 10 10011000
REG2 2.5V OUTPUT EFFICIENCY
vs. LOAD CURRENT
MAX1586A/86B/87A toc02
LOAD CURRENT (mA)
EFFICIENCY (%)
50
60
70
80
90
VIN = 3.6V
VIN = 4.0V
VIN = 5.0V
100
40
0.1 10 10011000
REG3 1.3V OUTPUT EFFICIENCY
vs. LOAD CURRENT
MAX1586A/86B/87A toc03
LOAD CURRENT (mA)
EFFICIENCY (%)
50
60
70
80
90
VIN = 3.6V
VIN = 4.0V VIN = 5.0V
100
40
0.1 10 10011000
REG3 1.3V OUTPUT WITH FORCED-PWM
EFFICIENCY vs. LOAD CURRENT
MAX1586A/86B/87A toc04
LOAD CURRENT (mA)
EFFICIENCY (%)
50
60
70
80
90
VIN = 3.6V
VIN = 5.0V
VIN = 4.0V
REG1 SLEEP LDO 3.3V OUTPUT
EFFICIENCY vs. LOAD CURRENT
MAX1586A/86B/87A toc05
LOAD CURRENT (mA)
EFFICIENCY (%)
100
40
50
60
70
80
90
0.1 1 10
VIN = 3.6V
VIN = 4.0V
VIN = 5.0V
REG2 SLEEP LDO 2.5V OUTPUT
EFFICIENCY vs. LOAD CURRENT
MAX1586A/86B/87A toc06
LOAD CURRENT (mA)
EFFICIENCY (%)
90
30
40
50
60
70
80
0.1 1 10
VIN = 3.6V VIN = 4.0V
VIN = 5.0V
0
20
140
100
180
220
021345
QUIESCENT CURRENT
vs. SUPPLY VOLTAGE
MAX1586A/86B/87A toc07
INPUT VOLTAGE (V)
INPUT CURRENT (µA)
BKBT BIASED AT 3.6V
V1, V2, AND V3 ON
V1 AND V2 ON
V1 ON
V1 AND V2 SLEEP
V1 SLEEP
ALL BUT V7 OFF
200
160
40
60
80
120
0
100
50
200
150
250
300
0400200 600 800 1000 1200
DROPOUT VOLTAGE
vs. LOAD CURRENT
MAX1586A/86B/87A toc08
LOAD CURRENT (mA)
DROPOUT VOLTAGE (mV)
REG1 3.3V OUTPUT
-100
0
-50
100
50
150
200
0 400200 600 800 1000 1200
CHANGE IN OUTPUT VOLTAGE
vs. LOAD CURRENT
MAX1586A/86B/87A toc09
LOAD CURRENT (mA)
CHANGE IN OUTPUT VOLTAGE (mV)
VIN = 3.6V
REG1 3.3V OUTPUT
REG3 1.3V OUTPUT
REG2 2.5V OUTPUT
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