Owner manual

MAX1566/MAX1567
Six-Channel, High-Efficiency, Digital
Camera Power Supplies
_______________________________________________________________________________________ 7
ELECTRICAL CHARACTERISTICS (continued)
(V
PVSU
= V
PV
= V
PVM
= V
PVSD
= V
INDL2
= 3.6V, T
A
= -40°C to +85°C, unless otherwise noted.)
PARAMETER CONDITIONS MIN MAX UNITS
Main Step-Down Voltage
Adjust Range
SUSD = GND, PVM must be greater than output (Note 6) 2.45 5.00 V
PVM Undervoltage Lockout in
Step-Down Mode
SUSD = GND (Note 6) 2.45 2.55 V
Regulation Voltage 1.225 1.275 V
FBM to CCM Transconductance FBM = CCM 80 185 µS
FBM Input Leakage Current FBM = 1.25V -100 +100 nA
Maximum Duty Cycle
Step-up mode (SUSD = PVSU),
step-down mode (SUSD = GND) (Note 6)
80 90 %
LXM Leakage Current V
LXM
= 0 to 3.6V, PVSU = 3.6V 5 µA
N channel 150
Switch On-Resistance
P channel 250
mΩ
Step-up mode (SUSD = PVSU) 1.8 2.4
Main Switch Current Limit
Step-down mode (SUSD = GND) 0.70 0.95
A
STEP-DOWN DC-TO-DC CONVERTER
Step-Down Output Voltage
Adjust Range
PVSD must be greater than output (Note 7) 1.25 5.00 V
FBSD Regulation Voltage 1.225 1.275 V
FBSD to CCSD
Transconductance
FBSD = CCSD 80 185 µS
FBSD Input Leakage Current FBSD = 1.25V -100 +100 nA
LXSD Leakage Current V
LXSD
= 0 to 3.6V, PVSU = 3.6V 5 µA
N channel 150
Switch On-Resistance
P channel 250
mΩ
P-Channel Current Limit 0.65 0.90 A
SDOK Output Low Voltage 0.1mA into SDOK 0.1 V
SDOK Leakage Current ONSU = GND 1 µA
AUX1, 2, 3 DC-TO-DC CONTROLLERS
INDL2 Undervoltage Lockout 2.45 2.55 V
Maximum Duty Cycle FB_ = 1V 80 90 %
FB1, FB2 (MAX1566), FB3H
Regulation Voltage
1.225 1.275 V
FB2 (MAX1567) Inverter
Regulation Voltage
-0.01 +0.01 V
FB3L Regulation Voltage 0.19 0.21 V
AUX1, AUX2 FB to CC
Transconductance
80 185 µS