Rainbow Electronics MAX1587A - Manual (Page 4)

MAX1586A/MAX1586B/MAX1587A
High-Efficiency, Low-I
Q
PMICs with
Dynamic Core for PDAs and Smart Phones
4 _______________________________________________________________________________________
PARAMETER CONDITIONS MIN TYP MAX UNITS
I LX3 = -180mA 0.225 0.375
P-Channel On-Resistance
I LX2 = -180mA, V PV3 = 2.6V 0.26 0.425
Ω
I LX3 = 180mA 0.15 0.25
N-Channel On-Resistance
I LX3 = 180mA, V PV3 = 2.6V 0.17 0.275
Ω
Current-Sense Transresistance 1.25 V/A
P-Channel Current-Limit Threshold -0.60 -0.7 -0.85 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) 0.5 A
LX3 Leakage Current V PV3_ = 5.5V, LX3 = GND or PV2, V ON3 = 0V -10 +0.1 +10 µA
LDOS V4, V5, V6, V1 SLEEP, V2 SLEEP, AND V7 OUTPUT
V4, V5, V6, V1 SLEEP, V2 SLEEP
Output Current
35 mA
V7 Output Current 30 mA
REG4 Output Voltage Load = 0.1 to 35mA 1.261 1.3 1.339 V
REG4 Noise With 1µF C OUT and 0.01µF C BYP 15 µVRMS
REG5 Output Voltage Load = 0.1mA to 35mA 1.067 1.1 1.133 V
IN45, IN6 Input Voltage Range 2.4 5.5 V
0V setti ng ( ei ther ON 6 l ow or ser i al p r og r am m ed ) 0
1.8V setting, load = 0.1mA to 35mA 1.746 1.8 1.854
2.5V setting, load = 0.1mA to 35mA 2.425 2.5 2.575
REG6 Output Voltage (POR Default
to 0V, Set by Serial Input)
MAX1586
3.0V setting, load = 0.1mA to 35mA 2.91 3.0 3.09
V
V1 on and in regulation V V1
V7 Output Voltage
V1 off V BKBT
V
V1 and V2 SLEEP Output Voltage
Accuracy
Set to same output voltage as REG1 and REG2 -3.0 +3.0 %
V1 and V2 SLEEP Dropout Voltage LOAD = 20mA 75 150 mV
V6 Dropout Voltage M AX 1586 3V m od e, l oad = 30m A, 2.5V m od e, l oad = 30m A 110 200 mV
V7 Switch Voltage Drop LOAD = 20mA, V BKBT = V V1 = 3.0V 100 200 mV
V4, V5, V6 Output Current Limit 40 90 mA
BKBT Leakage 1 µA
OSCILLATOR
PWM Switching Frequency 0.93 1 1.07 MHz
SUPERVISORY/MANAGEMENT FUNCTIONS
Rising 92 94.75 97
POK Trip Threshold (Note 4)
Falling 88.5 90.5 92.5
%
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 = 0°C to +85°C, unless otherwise noted. Typical values
are at T A = +25 °C.)