Datasheet
MAX8660/MAX8660A/MAX8660B/MAX8661
High-Efficiency, Low-I
Q
, PMICs with Dynamic
Voltage Management for Mobile Applications
8
ELECTRICAL CHARACTERISTICS (continued)
(V
IN
= V
IN5
= V
IN67
= V
IN8
= 3.6V, Figure 3, T
A
= -40°C to +85°C, unless otherwise noted. Typical values are at T
A
= +25°C.) (Note 2)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
MAX8660/MAX8660A/MAX8661, pow er i ng
up to 1.4V , Fi g ur e 6, R
RAM P
= 56kΩ
400
EN34 to V4 Enable Time t
PHLVTH4
MAX8660B, pow er i ng up to 1.15V , Fi g ur e 6,
R
RAM P
= 56kΩ
400
µs
Internal Off-Discharge Resistance 550 Ω
Minimum Duty Cycle
Forced-PWM mode only, minimum duty
cycle in skip mode is 0%
16.7 %
Maximum Duty Cycle 100 %
REG5 LDO
IN5 Input Voltage Range V
IN5
2.35 V
IN
V
REG5 default output voltage, 2.35V ≤ V
IN5
≤
6V, load = 0 to 200mA
1.764 1.800 1.836 V
V5 Output Voltage V5
REG5 serial programmed from 1.7V to 2.0V,
2.35V ≤ V
IN5
≤ 6V, load = 0 to 200mA
-2 +2 %
V5 Output Current Limit I
OUT5
225 350 500 mA
V5 Output-Voltage Noise 10Hz to 100kHz, I
OUT5
= 10mA 160 µV
RMS
V5 Power-Supply Rejection V
IN5
= (V5 + 1V), I
OUT5
= 10mA, f = 10kHz 40 dB
V5 Soft-Start Ramp Rate
Powering up to 1.8V (total ramp time is
225µs for all V5 output voltages)
5 7 9 mV/µs
EN5 to V5 Enable Time t
SEHVMH
Figure 6 290 µs
V5 Dynamic-Change Ramp Rate R
RAMP
= 56kΩ 10 mV/µs
Internal Off-Discharge Resistance 2kΩ
REG6, REG7 LDOs
IN67 Input Voltage Range V
IN67
2.35 V
IN
V
REG6 and REG7 Output Voltage
(POR Default to 0V, Set by Serial
Input)
V6
V7
Setting from 1.8V to 3.3V in 0.1V steps,
load = 0 to 300mA
-3 +3 %
V6, V7 Dropout Voltage 3V mode, load = 300mA (Note 3) 55 100 mV
V6, V7 Output Current Limit
I
OUT6
I
OUT7
V
IN67
= 3.6V 750 mA
V6, V7 Soft-Start Ramp Rate
Powering up to 3.3V (total ramp time is
450µs for all V6/V7 output voltages)
5 7 9 mV/µs
Internal Off-Discharge Resistance 350 Ω
REG8 ALWAYS-ON LDO
Load = 0 to 15mA 3.168 3.300 3.432
V8 Output Voltage V8
Load = 30mA 2.800 3.2 3.432
V
V8 Dropout Voltage Load = 15mA (Note 3) 180 mV
V8 Output Current Limit I
OUT8
V8 = 2.5V 30 70 135 mA
Internal Off-Discharge Resistance 1.5 kΩ
LOW-BATTERY DETECTOR (LBF, LBR, LBO)
Low-Battery Falling Threshold V
LBFTH
1.182 1.200 1.218 V
Low-Battery Rising Threshold V
LBRTH
1.231 1.250 1.268 V