Rainbow Electronics MAX1567 User Manual
Page 7
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
m
Ω
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
m
Ω
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