MAX5090C Datasheet PDF - Maxim Integrated Products
Part Number | MAX5090C | |
Description | High-Efficiency MAXPower Step-Down DC-DC Converters | |
Manufacturers | Maxim Integrated Products | |
Logo | ||
There is a preview and MAX5090C download ( pdf file ) link at the bottom of this page. Total 17 Pages |
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EVAALVUAAILTAIOBNLEKIT
2A, 76V, High-Efficiency
MAXPower Step-Down DC-DC Converters
General Description
The MAX5090A/B/C easy-to-use, high-efficiency, high-
voltage step-down DC-DC converters operate from an
input voltage up to 76V, and consume only 310µA qui-
escent current at no load. This pulse-width-modulated
(PWM) converter operates at a fixed 127kHz switching
frequency at heavy loads, and automatically switches
to pulse-skipping mode to provide low quiescent cur-
rent and high efficiency at light loads. The MAX5090
includes internal frequency compensation simplifying
circuit implementation. The device can also be syn-
www.DcahtraoSnhiezeetd4Uw.ciothmexternal system clock frequency in a
noise-sensitive application. The MAX5090 uses an
internal low on-resistance and a high-voltage DMOS
transistor to obtain high efficiency and reduce overall
system cost. This device includes undervoltage lock-
out, cycle-by-cycle current limit, hiccup-mode output
short-circuit protection, and overtemperature shutdown.
The MAX5090 delivers up to 2A output current. External
shutdown is included, featuring 19µA (typ) shutdown
current. The MAX5090A/MAX5090B versions have fixed
output voltages of 3.3V and 5V, respectively, while the
MAX5090C features an adjustable 1.265V to 11V output
voltage.
The MAX5090 is available in a space-saving 16-pin thin
QFN package (5mm x 5mm) and operates over the
automotive temperature range (-40°C to +125°C).
Applications
Automotive
Industrial
Distributed Power
Typical Operating Circuit
Features
♦ Wide Input Voltage Range: 6.5V to 76V
♦ Fixed (3.3V, 5V) and Adjustable (1.265V to 11V)
Output-Voltage Versions
♦ 2A Output Current
♦ Efficiency Up to 92%
♦ Internal 0.26Ω High-Side DMOS FET
♦ 310µA Quiescent Current at No Load
♦ 19µA Shutdown Current
♦ Internal Frequency Compensation
♦ Fixed 127kHz Switching Frequency
♦ External Frequency Synchronization
♦ Thermal Shutdown and Short-Circuit Current Limit
♦ -40°C to +125°C Automotive Temperature Range
♦ 16-Pin (5mm x 5mm) Thin QFN Package
♦ Capable of Dissipating 2.67W at +70°C
Ordering Information
PART
TEMP
RANGE
PIN-
PACKAGE*
OUTPUT
VOLTAGE
(V)
MAX5090AATE+ -40°C to +125°C 16 TQFN-EP**
3.3
MAX5090AATE -40°C to +125°C 16 TQFN-EP**
3.3
MAX5090BATE+ -40°C to +125°C 16 TQFN-EP**
5.0
MAX5090BATE -40°C to +125°C 16 TQFN-EP**
5.0
Ordering Information continued at end of data sheet.
*The package code is T1655-3.
**EP = Exposed pad.
+Denotes lead-free package.
Pin Configuration
VIN
7.5V TO 76V
CIN
68µF
CBYPASS
0.47µF
RIN
10Ω
VIN
ON/OFF
DRAIN
LX
MAX5090B
SYNC
SGND
PGND
BST
FB
SS
VD
CBST
0.22µF
100µH
D1
PDS5100H
3.3µF
CSS
0.047µF
VOUT
5V/2A
COUT
100µF
TOP VIEW
12 11 10 9
DRAIN 13
DRAIN 14
N.C. 15
N.C. 16
EP
MA5090
1234
8 FB
7 SS
6 SYNC
5 VD
TQFN
________________________________________________________________ Maxim Integrated Products 1
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.
|
|
2A, 76V, High-Efficiency MAXPower Step-Down
DC-DC Converters
Typical Operating Characteristics (continued)
(VIN = 12V, VON/OFF =12V, TA = TJ = -40°C to +125°C, unless otherwise noted. Typical values are at TA = +25°C. See the Typical
Operating Circuit, if applicable.)
OUTPUT CURRENT LIMIT vs. TEMPERATURE
(MAX5090BATE)
4.0
VOUT = 5V
5% DROP IN VOUT
3.5 PULSED OUTPUT LOAD
OUTPUT CURRENT LIMIT vs. INPUT VOLTAGE
(MAX5090AATE)
7.0
VOUT = 3.3V
5% DROP IN VOUT
6.0 PULSED OUTPUT LOAD
OUTPUT CURRENT LIMIT vs. INPUT VOLTAGE
(MAX5090BATE)
7.0
VOUT = 5V
5% DROP IN VOUT
6.0 PULSED OUTPUT LOAD
3.0
www.DataSheet4U.com
2.5
5.0
4.0
5.0
4.0
2.0 3.0 3.0
1.5 2.0 2.0
1.0
-50 -25 0 25 50 75 100 125 150
AMBIENT TEMPERATURE (°C)
1.0
6.5 16 26 36 46 56 66 76
INPUT VOLTAGE (V)
1.0
6.5 16 26 36 46 56 66 76
INPUT VOLTAGE (V)
NO-LOAD SUPPLY CURRENT vs. TEMPERATURE
(MAX5090AATE)
600
VOUT = 3.3V
550
500
450
400
350
NO-LOAD SUPPLY CURRENT vs. INPUT VOLTAGE
(MAX5090AATE)
600
VOUT = 3.3V
550
500
450
400
350
SHUTDOWN CURRENT vs. TEMPERATURE
(MAX5090AATE)
30
VOUT = 3.3V
26
22
18
14
300
-50 -25 0 25 50 75 100 125 150
AMBIENT TEMPERATURE (°C)
300
6.5 16 26 36 46 56 66 76
INPUT VOLTAGE (V)
10
-50 -25 0 25 50 100 125 150 175
AMBIENT TEMPERATURE (°C)
SHUTDOWN CURRENT
vs. INPUT VOLTAGE
45
40 VOUT = 3.3V
35
30
25
20
15
10
5
OUTPUT VOLTAGE
vs. INPUT VOLTAGE
13
MAX5090CATE
VOUT = 11V
11 VON/OFF = VIN
9
IOUT = 2A
IOUT = 1A
6
IOUT = 0A
3
LOAD-TRANSIENT RESPONSE
(MAX5090AATE)
MAX5090 toc18
VOUT = 3.3V
A
B
0
6.5 16
26 36 46 56 66 76
0
5 6 7 8 9 10 11 11.5 12 12.5 13
400µs/div
INPUT VOLTAGE (V)
VIN (V)
A: VOUT, 200mV/div, AC-COUPLED
B: IOUT, 1A/div, 1A TO 2A
_______________________________________________________________________________________
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Information | Total 17 Pages | |
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Download | [ MAX5090C.PDF Datasheet ] |
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