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MAX5003ESE+T

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P16
General Description
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.
Applications
Telecommunication Power Supplies
ISDN Power Supplies
+42V Automobile Systems
High-Voltage Power-Supply Modules
Industrial Power Supplies
Features
♦ Wide Input Range: 11V to 110V
♦ Internal High-Voltage Startup Circuit
♦ Externally Adjustable Settings
Output Switch Current Limit
Oscillator Frequency
Soft-Start
Undervoltage Lockout
Maximum Duty Cycle
♦ Low External Component Count
♦ External Frequency Synchronization
♦ Primary or Secondary Regulation
♦ Input Feed-Forward for Fast Line-Transient
Response
♦ Precision ±2.5% Reference over Rated
Temperature Range
♦ Thermal Shutdown
MAX5003
High-Voltage PWM
Power-Supply Controller
________________________________________________________________ Maxim Integrated Products 1
16
15
14
13
12
11
10
9
1
2
3
4
5
6
7
8
V+ V
DD
V
CC
NDRV
PGND
CS
AGND
MAXTON
FB
TOP VIEW
MAX5003
QSOP/Narrow SO
INDIV
ES
REF
FREQ
SS
CON
COMP
19-1555; Rev 2; 4/02
PART
MAX5003CEE
MAX5003CSE
MAX5003EEE -40°C to +85°C
0°C to +70°C
0°C to +70°C
TEMP. RANGE PIN-PACKAGE
16 QSOP
16 Narrow SO
16 QSOP
EVALUATION KIT
AVAILABLE
Note: Dice are designed to operate over a -40°C to +140°C junc-
tion temperature (T
j
) range, but are tested and guaranteed at
T
A
= +25°C.
Pin Configuration
Ordering Information
MAX5003ESE -40°C to +85°C 16 Narrow SO
MAX5003C/D (Note A) Dice
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.
MAX5003
High-Voltage PWM
Power-Supply Controller
2 _______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS
(V+ = V
ES
= V
DD
= +12V, V
INDIV
= 2V, V
CON
= 0, R
FREQ
= R
MAXTON
= 200kΩ, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical
values are at T
A
= +25°C.)
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.
V+ to GND ............................................................-0.3V to +120V
ES to GND ..............................................................-0.3V to +40V
V
DD
to GND............................................................-0.3V to +19V
V
CC
to GND.........................................................-0.3V to +12.5V
MAXTON, COMP, CS, FB, CON to GND..................-0.3V to +8V
NDRV, SS, FREQ to GND...........................-0.3V to (V
CC
+ 0.3V)
I
NDIV
, REF to GND.................................................-0.3V to +4.5V
V
CC
, V
DD
, V+, ES Current ................................................±20mA
NDRV Current, Continuous...............................................±25mA
NDRV Current, ≤ 1µs .............................................................±1A
CON and REF Current ......................................................±20mA
All Other Pins ....................................................................±20mA
Continuous Power Dissipation (T
A
= +70°C)
16-Pin SO (derate 9.5mW/°C above +70°C)...............762mW
16-Pin QSOP (derate 8.3mW/°C above +70°C)..........667mW
Maximum Junction Temperature (T
J
) ..............................+150°C
Operating Temperature Ranges
MAX5003C_E ....................................................0°C to +70°C
MAX5003E_E ..................................................-40°C to +85°C
Operating Junction Temperature (T
J
) .............................+125°C
16-Pin SO θ
JA
.................................................................105°C/W
16-Pin QSOP θ
JA
............................................................120°C/W
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
I
REF
= 0 to 1mA
No load
V+ = V
ES
, V
DD
= 18.75
I
NDRV
= 50 mA
V
INDIV
= 0, V+ = 110V, V
ES
= V
DD
=
unconnected
I
NDRV
= 50 mA
V
NDRV
= V
CC
V
NDRV
= 0, V
CC
supported by V
CC
capacitor
V+ = 36V, ES = unconnected,
V
DD
= 18.75V
V
CC
falling
V+ = 36V, I
V+
< 75µA,
ES = unconnected
V+ = V
ES
= 36V, I
NDRV
= 7.5mA
V+ = 110V, V
DD
= unconnected
V+ = 36V, I
DD
= 0 to 7.5mA,
ES = unconnected
mV
520
∆V
REF
REF Voltage Regulation
V
2.905 3.000 3.098
V
REF
REF Output Voltage
Ω
1
R
OL
NDRV Resistance Low
Ω
412
R
OH
NDRV Resistance High
mA
1000
Peak Sink Current
mA
570
Peak Source Current
V
6.3
V
CCLO
V
CC
Undervoltage
Lockout Voltage
V
CC
V
CC
Output Voltage
mA
1.2
I
DD
µA
35 75
I+Shutdown Current
Supply Current
V
7.4 12
V
10.75
V
TO
V
DD
Regulator Turn-Off Voltage
V
10.75 18.75
V
DD
V
DD
Input Voltage Range
V
25
V
10.8 36
V
ESI
E
S
Input Voltage (Note 1)
V
36
V
ESO
E
S
Output Voltage
V
9 9.75 10.5
V
DD
V
DD
Output Voltage
CONDITIONS UNITSMIN TYP MAXSYMBOL PARAMETER
V
DD
= unconnected, V+ = V
ES
, I
NDRV
= 7.5mA
V110
V+V+ Input Voltage (Note 1)
E
S
= V
DD
= uncon-
nected
REFERENCE
OUTPUT DRIVER
CHIP SUPPLY (V
CC
)
PREREGULATOR/STARTUP
SUPPLY CURRENT
I
NDRV
= 2mA
I
NDRV
= 5mA
MAX5003
High-Voltage PWM
Power-Supply Controller
_______________________________________________________________________________________ 3
ELECTRICAL CHARACTERISTICS (continued)
(V+ = V
ES
= V
DD
= +12V, V
INDIV
= 2V, V
CON
= 0, R
FREQ
= R
MAXTON
= 200kΩ, T
A
= T
MIN to
T
MAX
, unless otherwise noted. Typical
values are at T
A
= +25°C.)
(Note 2)
V
FREQ
= 5V, V
CON
= 3.0V
V
CON
= 3.0V
V
CON
= 3.0V
From end of blanking time 25mV overdrive
0 < V
CS
< 0.1V
V
INDIV
= 1.28V
FB = COMP, V
CON
= 1.5V
V+ = V
ES
= V
DD
=
10.8V and 18.75V
At COMP
At COMP
I
COMP
= 5µA; V
COMP
= 0.5V, 2.5V
R
LOAD
= 200kΩ, C
LOAD
= 100pF
A
VOL
= 1V/V, C
LOAD
= 100pF
V
FB
= 1.5V
kHz
200 1200
f
FREQ
FREQ Range
µs
813
t
EXT
External Oscillator Maximum
Low Time
µA
1
I
OL
FREQ Output Low
V
2.7
V
IH
FREQ Input High
V
0.8
V
IL
FREQ Input Low
µA
-1 0.01 +1
INDIV Bias Current
mV
125
V
HYST
INDIV Hysteresis
1.23 1.32 1.45
V
1.15 1.20 1.25
V
INDIVLO
INDIV Undervoltage Lockout
ppm/°C
100
TC
FB
FB V
SET
Tempco
µA
-1 0.1 +1
I
FB
FB Bias Current
ns
70
t
B
CS Blanking Time
ns
240
t
D
µA
-1 +1
I
CS
CS Input Bias Current
Overcurrent Delay
V
1.448 1.485 1.522
V
SET
FB Regulation Voltage
V
3.00
V
COMPH
Output Clamp High
V
0.25
V
COMPL
Output Clamp Low
dB
60 80
A
V
Voltage Gain
MHz
1.2
BWUnity-Gain Bandwidth
degrees
65
φ
Phase Margin
f
S
= 1/4 f
FREQ
ns
150
FREQ HI/LO Pulse Width
kHz
50 300
f
S
Frequency Range
CONDITIONS UNITS MIN TYP MAXSYMBOLPARAMETERS
V
FREQ
= 1.5V
V
FREQ
= 0
µA
1
I
OL
FREQ Output Current Low
µA
300
I
OH
FREQ Output Current High
kHz
80 100 120
Oscillator Frequency
kΩ
50 500
R
FREQ
FREQ Resistor Range
V
INDIV
= 1.25V %
75
Maximum Programmable
Duty Cycle
V
CON
= 1.25V mV
80 100 120
V
CS
CS Threshold Voltage
MAXIMUM DUTY CYCLE (MAXTON)
MAIN OSCILLATOR—INTERNAL MODE
MAIN OSCILLATOR—EXTERNAL MODE
UNDERVOLTAGE LOCKOUT
FEEDBACK INPUT AND SET POINT
ERROR AMPLIFIER
CURRENT LIMIT
V
INDIV
falling
V
INDIV
rising
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P16

MAX5003ESE+T

Mfr. #:
Buy MAX5003ESE+T
Manufacturer:
Maxim Integrated
Description:
Switching Controllers PWM Power-Supply Controller
Lifecycle:
New from this manufacturer.
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