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| MAX8660 Datasheet, PDF (7/42 Pages) Maxim Integrated Products – High-Efficiency, Low-IQ, PMICs with Dynamic Voltage Management for Mobile Applications | |||
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High-Efficiency, Low-IQ, PMICs with Dynamic
Voltage Management for Mobile Applications
ELECTRICAL CHARACTERISTICS (continued)
(VIN = VIN5 = VIN67 = VIN8 = 3.6V, Figure 3, TA = -40°C to +85°C, unless otherwise noted. Typical values are at TA = +25°C.) (Note 2)
PARAMETER
SYMBOL
CONDITIONS
p-Channel Current-Limit Threshold
n-Channel Zero-Crossing Threshold
n-Channel Negative Current Limit
Forced-PWM mode only
REG3 Maximum Output Current
IOUT3 2.6V ⤠VPV3_ ⤠6V (Note 5)
V3 Bias Current
LX3 Leakage Current
Soft-Start Ramp Rate
V3 Dynamic-Change Ramp Rate
EN34 to V3 Enable Time
Internal Off-Discharge Resistance
tPHLVTH3
VPV3 = 6V,
LX3 = PG3 or PV3,
VEN34 = 0V
TA = +25°C
TA = +85°C
RRAMP = 56kΩ to 1.4V
RRAMP = 56kΩ
Powering up to 1.4V, Figure 6, RRAMP = 56kΩ
Minimum Duty Cycle
Forced-PWM mode only, min duty cycle in
skip mode is 0%
Maximum Duty Cycle
REG4âSYNCHRONOUS STEP-DOWN DC-DC CONVERTER
V4 Output Voltage Accuracy
REG4 default output voltage,
V4
VPV3 = 3.6V, load = 200mA
REG4 serial programmed from 0.9V to 1.8V,
load = 200mA (Note 6)
V4 Load Regulation
Load = 0 to 400mA
V4 Line Regulation
(Note 7)
p-Channel On-Resistance
n-Channel On-Resistance
p-Channel Current-Limit Threshold
n-Channel Zero-Crossing Threshold
n-Channel Negative Current Limit
Forced-PWM mode only
REG4 Maximum Output Current
IOUT4 2.6V ⤠VPV3 ⤠6V (Note 5)
V4 Bias Current
LX4 Leakage Current
Soft-Start Ramp Rate
V4 Dynamic-Change Ramp Rate
EN34 to V4 Enable Time
tPHLVTH4
VPV4 = 6V,
LX4 = PG4 or PV4,
VEN34 = 0V
TA = +25°C
TA = +85°C
RRAMP = 56kΩ to 1.4V
RRAMP = 56kΩ
Powering up to 1.4V, Figure 6, RRAMP = 56kΩ
Internal Off-Discharge Resistance
Minimum Duty Cycle
Forced-PWM mode only, min duty cycle in
skip mode is 0%
Maximum Duty Cycle
MIN
1.85
1.6
-2
1.379
-1.5
0.05
0.4
-2
TYP
2.15
25
-0.8
0.01
+0.03
0.24
8
10
400
550
16.7
100
1.400
-40
0.1
0.37
0.3
0.78
25
-975
0.01
±0.02
0.12
8
10
400
550
16.7
100
MAX
2.45
+2
1.421
+1.5
0.90
+2
UNITS
A
mA
A
A
µA
µA
mV/µs
mV/µs
µs
Ω
%
%
V
%
mV/A
%/V
Ω
Ω
A
mA
mA
A
µA
µA
mV/µs
mV/µs
µs
Ω
%
%
_______________________________________________________________________________________ 7
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