Rainbow Electronics MAX1567 User Manual
Page 6
MAX1566/MAX1567
Six-Channel, High-Efficiency, Digital
Camera Power Supplies
6
_______________________________________________________________________________________
ELECTRICAL CHARACTERISTICS
(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
GENERAL
Input Voltage Range
(Note 2)
0.7
5.5
V
Step-Up Minimum Startup
Voltage (Note 2)
I
LOAD
< 1mA, T
A
= +25
°C; startup voltage tempco is
-2300ppm/
°C (typ) (Note 3)
1.1
V
Shutdown Supply Current into PV
PV = 3.6V
10
µA
Supply Current into PV with Step-
Up Enabled
ONSU = 3.6V, FBSU = 1.5V
(does not include switching losses)
400
µA
Supply Current into PV with Step-
Up and Step-Down Enabled
ONSU = ONSD = 3.6V, FBSU = 1.5V, FBSD = 1.5V
(does not include switching losses)
600
µA
Supply Current into PV with Step-
Up and Main Enabled
ONSU = ONM = 3.6V, FBSU = 1.5V, FBSD = 1.5V
(does not include switching losses)
600
µA
Total Supply Current from PV and
PVSU with Step-Up and One
AUX Enabled
ONSU = ON1 = 3.6V, FBSU = 1.5V, FB2 = 1.5V
(does not include switching losses)
550
µA
REFERENCE
Reference Output Voltage
I
REF
= 20µA
1.23
1.27
V
Reference Load Regulation
10µA < I
REF
< 200µA
10
mV
Reference Line Regulation
2.7V < PVSU < 5.5V
5
mV
OSCILLATOR
OSC Discharge Trip Level
Rising edge
1.225
1.275
V
OSC Discharge Resistance
OSC = 1.5V, I
OSC
= 3mA
80
Ω
STEP-UP DC-TO-DC CONVERTER
Step-Up Startup-to-Normal
Operating Threshold
Rising edge or falling edge (Note 4)
2.30
2.65
V
Step-Up Voltage Adjust Range
3.0
5.5
V
FBSU Regulation Voltage
1.231
1.269
V
FBSU to CCSU
Transconductance
FBSU = CCSU
80
185
µS
FBSU Input Leakage Current
FBSU = 1.25V
-100
+100
nA
Step-Up Maximum Duty Cycle
FBSU = 1V
80
90
%
PVSU Leakage Current
V
LX
= 0V, PVSU = 3.6V
5
µA
LXSU Leakage Current
V
LX
= V
OUT
= 3.6V
5
µA
N channel
150
Switch On-Resistance
P channel
250
m
Ω
N-Channel Current Limit
1.8
2.4
A
MAIN DC-TO-DC CONVERTER
Main Step-Up Voltage
Adjust Range
SUSD = PVSU
3.0
5.5
V