MAX1567ETL+ Maxim Integrated Products, MAX1567ETL+ Datasheet - Page 22

• Manufacturer Part Number: MAX1567ETL+
• Description: IC DGTL CAM PWR-SUP 6CH 40TQFN
• Manufacturer: Maxim Integrated Products

Specifications of MAX1567ETL+

• Applications: Controller, Digital Camera
• Voltage - Input: 0.7 ~ 5.5 V
• Number Of Outputs: 7
• Voltage - Output: 1.25 ~ 5 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 40-TQFN Exposed Pad
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Six-Channel, High-Efficiency, Digital
Camera Power Supplies
Figure 6. Oscillator Functional Diagram
Figure 7. LED drive with open LED overvoltage protection is
provided by the additional feedback input to AUX3, FB3H.
The MAX1566/MAX1567 support MAX1801 slave PWM
controllers that obtain input power, a voltage reference,
and an oscillator signal directly from the MAX1566/
MAX1567 master. The master-slave configuration allows
channels to be easily added and minimizes system cost
by eliminating redundant circuitry. The slaves also con-
trol the harmonic content of noise because their operat-
ing frequency is synchronized to that of the MAX1566/
22
______________________________________________________________________________________
D2–D5
LEDS
V
BATT
TO
R3
OSC
V
SU
R
C
OSC
OSC
R1
R2
NOTE: IF OPEN LED PROTECTION IS NOT
REQUIRED, REMOVE R2 AND R1 AND GROUND FB3H.
Master-Slave Configurations
(1.25V)
V
REF
ONE-SHOT
DL3
FB3H
(1.25V)
FB3L
(0.2V)
200ns
(PARTIAL)
MAX1566
MAX1567
MAX1566
MAX1567
PVSU
AUX3
PWM
MAX1567 master converter. A MAX1801 connection to
the MAX1566/MAX1567 is shown in Figure 14.
The MAX1566/MAX1567 include three versatile status
outputs that can provide information to the system. All
are open-drain outputs and can directly drive MOSFET
switches to facilitate sequencing, disconnect loads
during overloads, or perform other hardware-based
functions.
Figure 8. +15V LCD Bias with Basic Boost Topology
Figure 9. +15V and -7.5V CCD Bias with Transformer
NOTE: THIS CIRCUIT CAN OPERATE WITH AUX1, AUX2,
OR AUX3 ON THE MAX1566, AND WITH AUX1 OR AUX3 ON
THE MAX1567. TO USE AUX3, FB3L = GND, AND
FB3H IS USED FOR FEEDBACK.
Status Outputs (
NOTE: THIS CIRCUIT CAN OPERATE WITH AUX1, AUX2,
OR AUX3 ON THE MAX1566, AND WITH AUX1 OR AUX3 ON
THE MAX1567. TO USE AUX3, FB3L = GND, AND
FB3H IS USED FOR FEEDBACK.
(PARTIAL)
MAX1566
MAX1567
PWM
AUX
(PARTIAL)
MAX1566
MAX1567
PWM
AUX
PVSU
PVSU
FB_
DL_
V
BATT
DL_
FB_
TO
Q1
SDOK , AUX1OK , SCF)
Q1
V
TO
BATT
D6
D2
+15V
50mA
LCD
+15V
50mA
CCD+
-7.5V
30mA
CCD-