MAX1566-MAX1567 Datasheet, PDF (4/35 Pages) Maxim Integrated Products – Six-Channel, High-Efficiency, Digital Camera Power Supplies

Six-Channel, High-Efficiency, Digital
Camera Power Supplies
ELECTRICAL CHARACTERISTICS (continued)
(V_PVSU = V_PV = V_PVM = V_PVSD = V_INDL2 = 3.6V, T_A = 0°C to +85°C, unless otherwise noted.)
PARAMETER
CONDITIONS
MIN
Step-up mode (SUSD = PVSU)
80
Maximum Duty Cycle (Note 6)
Step-down mode (SUSD = GND)
LXM Leakage Current
Switch On-Resistance
V_LXM = 0 to 3.6V, PVSU = 3.6V
N channel
P channel
Step-up mode (SUSD = PVSU)
1.8
Main Switch Current Limit
Step-down mode (SUSD = GND)
0.70
Synchronous Rectifier
Turn-Off Current
Step-up mode (SUSD = PVSU)
Step-down mode (SUSD = GND)
Soft-Start Interval
STEP-DOWN DC-TO-DC CONVERTER
Step-Down Output-Voltage Adjust _{PVSD must be greater than output (Note 7)}
Range
FBSD Regulation Voltage
FBSD to CCSD
Transconductance
FBSD = CCSD
FBSD Input Leakage Current
Idle Mode Trip Level
FBSD = 1.25V
Current-Sense Amplifier
Transresistance
LXSD Leakage Current
Switch On-Resistance
P-Channel Current Limit
N-Channel Turn-Off Current
V_LXSD = 0 to 3.6V, PVSU = 3.6V
N channel
P channel
1.25
1.231
80
-100
0.65
Soft-Start Interval
SDOK Output Low Voltage
0.1mA into SDOK
SDOK Leakage Current
ONSU = GND
AUX1, 2, 3 DC-TO-DC CONTROLLERS
INDL2 Undervoltage
Lockout
Maximum Duty Cycle
FB_ = 1V
FB1, FB2 (MAX1566), FB3H
Regulation Voltage
FB2 (MAX1567) Inverter
Regulation Voltage
2.45
80
1.231
-0.01
TYP
85
95
0.1
95
150
2.1
0.8
20
20
4096
1.25
135
0.1
100
0.5
0.1
95
150
0.77
20
2048
0.01
0.01
2.5
85
1.25
0
MAX
90
5
150
250
2.4
0.95
UNITS
%
µA
mΩ
A
mA
OSC
cycles
5.00
V
1.269
V
185
µS
+100
nA
mA
V/A
5
µA
150
mΩ
250
0.90
A
mA
OSC
cycles
0.1
V
1
µA
2.55
V
90
%
1.269
V
+0.01
V
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