MAX5003 Maxim Integrated Products, MAX5003 Datasheet
MAX5003
Manufacturer Part Number
MAX5003
Description
High-voltage PWM Power-supply Controller
Manufacturer
Maxim Integrated Products
Datasheet
1.MAX5003.pdf
(16 pages)
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The MAX5003 high-voltage switching power-supply
controller has all the features and building blocks need-
ed for a cost-effective flyback and forward voltage-
mode control converter. This device can be used to
design both isolated and nonisolated power supplies
with multiple output voltages that operate from a wide
range of voltage sources. It includes a high-voltage
internal start-up circuit that operates from a wide 11V to
110V input range. The MAX5003 drives an external N-
channel power MOSFET and has a current-sense pin
that detects overcurrent conditions and turns off the
power switch when the current-limit threshold is
exceeded. The choice of external power MOSFET and
other external components determines output voltage
and power.
The MAX5003 offers some distinctive advantages: soft-
start, undervoltage lockout, external frequency synchro-
nization, and fast input voltage feed-forward. The
device is designed to operate at up to 300kHz switch-
ing frequency. This allows use of miniature magnetic
components and low-profile capacitors. Undervoltage
lockout, soft-start, switching frequency, maximum duty
cycle, and overcurrent protection limit are all adjustable
using a minimum number of external components. In
systems with multiple controllers, the MAX5003 can be
externally synchronized to operate from a common sys-
tem clock.
Warning: The MAX5003 is designed to operate with
high voltages. Exercise caution.
The MAX5003 is available in 16-pin SO and QSOP pack-
ages. An evaluation kit (MAX5003EVKIT) is also available.
19-1555; Rev 2; 4/02
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
Telecommunication Power Supplies
ISDN Power Supplies
+42V Automobile Systems
High-Voltage Power-Supply Modules
Industrial Power Supplies
________________________________________________________________ Maxim Integrated Products
General Description
Applications
Power-Supply Controller
o Wide Input Range: 11V to 110V
o Internal High-Voltage Startup Circuit
o Externally Adjustable Settings
o Low External Component Count
o External Frequency Synchronization
o Primary or Secondary Regulation
o Input Feed-Forward for Fast Line-Transient
o Precision ±2.5% Reference over Rated
o Thermal Shutdown
Note: Dice are designed to operate over a -40°C to +140°C junc-
tion temperature (T
T
A
MAX5003CEE
MAX5003CSE
MAX5003C/D
MAX5003EEE
MAX5003ESE
Response
Temperature Range
= +25°C.
TOP VIEW
Output Switch Current Limit
Oscillator Frequency
Soft-Start
Undervoltage Lockout
Maximum Duty Cycle
PART
High-Voltage PWM
COMP
INDIV
FREQ
CON
REF
j
) range, but are tested and guaranteed at
V+
ES
SS
-40°C to +85°C
-40°C to +85°C
TEMP. RANGE
1
2
6
3
4
5
7
8
0°C to +70°C
0°C to +70°C
QSOP/Narrow SO
Ordering Information
(Note A)
MAX5003
Pin Configuration
16
15
14
13
12
11
10
9
16 QSOP
16 Narrow SO
16 QSOP
16 Narrow SO
PIN-PACKAGE
Dice
V
V
NDRV
PGND
CS
AGND
MAXTON
FB
DD
CC
Features
1
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