MAX1586A/MAX1586B/MAX1587A
High-Efficiency, Low-I
Q
PMICs with
Dynamic Core for PDAs and Smart Phones
_______________________________________________________________________________________ 7
SYNCHRONOUS-BUCK PWM REG3
REG3 from 1.3V to 1.475V, 2.6V ≤ V
PV3_
≤ 5.5V,
load = 0 to 500mA
-1.5 +1.5
REG3 Output Voltage Accuracy
REG3 from 0.70V to 1.275V, 2.6V ≤ V
PV3_
≤ 5.5V, load = 0
to 500mA
-2
+2
0.375
P-Channel On-Resistance
I
LX2
= -180mA, V
PV3
= 2.6V
0.425
0.25
N-Channel On-Resistance
I
LX3
= 180mA, V
PV3
= 2.6V
0.275
Ω
P-Channel Current-Limit Threshold
-0.60 +0.85
A
OUT3 Maximum Output Current 2.6V ≤ V
PV3_
≤ 5.5V (Note 3)
0.4
A
LX3 Leakage Current V
PV3
= 5.5V, LX3 = GND or PV2, V
ON3
= 0V
-10 +10
µA
LDOs V4, V5, V6, V1 SLEEP, V2 SLEEP, AND V7 OUTPUT
V4, V5, V6, V1 SLEEP, V2 SLEEP
Output Current
35
30
mA
REG4 Output Voltage Load = 0.1mA to 35mA
1.254 1.346
V
REG5 Output Voltage Load = 0.1mA to 35mA
1.061 1.139
V
IN45, IN6 Input Voltage Range
2.4 5.5
V
1.8V setting, load = 0.1mA to 35mA
1.737 1.863
2.5V setting, load = 0.1mA to 35mA
2.412 2.588
REG6 Output Voltage (POR Default
to 0V, Set by Serial Input)
MAX1586
3.0V setting, load = 0.1mA to 35mA
2.895 3.105
V
V1 and V2 SLEEP Output Voltage
Accuracy
Set to same output voltage as REG1 and REG2
-3.5 +3.5
%
V1 and V2 SLEEP Dropout Voltage Load = 20mA
150
M AX 1586 3V m od e, l oad = 30m A; 2.5V m od e, l oad = 30m A 200
mV
V7 Switch Voltage Drop Load = 20mA, V
BKBT
= V
V1
= 3.0V
200
mV
V4, V5, V6 Output Current Limit
40
mA
BKBT Leakage 1 µA
OSCILLATOR
PWM Switching Frequency
0.93 1.07
SUPERVISORY/MANAGEMENT FUNCTIONS
Rising
92
97
POK Trip Threshold (Note 4)
Falling
88.5 92.5
3.51 3.69
LBI Threshold (Falling)
MAX1586,
hysteresis is 5% (typ)
With resistors at LBI
0.98 1.02
2.993 3.307
DBI Threshold (Falling)
MAX1586,
hysteresis is 5% (typ)
With resistors at LBI
1.208 1.256
V
RSO Threshold (Falling) Voltage on REG7, hysteresis is 5% (typ)
2.25 2.60
ELECTRICAL CHARACTERISTICS (continued)
(V
IN
= 3.6V, V
BKBT
= 3.0V, V
LBI
= 1.1V, V
DBI
= 1.35V, circuit of Figure 5, T
A
= -40°C to +85°C, unless otherwise noted.) (Note 5)
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