Rainbow Electronics MAX1567 User Manual
Page 2
MAX1566/MAX1567
Six-Channel, High-Efficiency, Digital
Camera Power Supplies
2
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ABSOLUTE MAXIMUM RATINGS
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
PV, PVSU, SDOK, AUX1OK, SCF, ON_, FB_,
SUSD to GND ....................................................... -0.3V to +6V
PG_ to GND...........................................................-0.3V to +0.3V
DL1, DL3, INDL2, PVM, PVSD to GND …-0.3V to (PVSU + 0.3V)
DL2 to GND ............................................-0.3V to (INDL2 + 0.3V)
LXSU Current (Note 1) ..........................................................3.6A
LXM Current (Note 1) ............................................................3.6A
LXSD Current (Note 1) ........................................................2.25A
REF, OSC, CC_ to GND...........................-0.3V to (PVSU + 0.3V)
Continuous Power Dissipation (T
A
= +70°C)
40-Pin Thin QFN (derate 26.3mW/°C above +70°C) .2105mW
Operating Temperature Range ...........................-40°C to +85°C
Junction Temperature ......................................................+150°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
ELECTRICAL CHARACTERISTICS
(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
TYP
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)
0.9
1.1
V
Shutdown Supply Current into PV
PV = 3.6V
0.1
10
µA
Supply Current into PV with Step-
Up Enabled
ONSU = 3.6V, FBSU = 1.5V
(does not include switching losses)
300
450
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)
450
700
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)
450
700
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)
400
650
µA
REFERENCE
Reference Output Voltage
I
REF
= 20µA
1.23
1.25
1.27
V
Reference Load Regulation
10µA < I
REF
< 200µA
4.5
10
mV
Reference Line Regulation
2.7 < PVSU < 5.5V
1.3
5
mV
OSCILLATOR
OSC Discharge Trip Level
Rising edge
1.225
1.25
1.275
V
OSC Discharge Resistance
OSC = 1.5V, I
OSC
= 3mA
52
80
Ω
OSC Discharge Pulse Width
150
ns
OSC Frequency
R
OSC
= 47k
Ω, C
OSC
= 100pF
500
kHz
Note 1: LXSU has internal clamp diodes to PVSU and PGSU, LXM has internal clamp diodes to PVM and PGM, and LXSD has inter-
nal clamp diodes to PVSD and PGSD. Applications that forward bias these diodes should take care not to exceed the
devices’ power dissipation limits.