MAX5097AEVKIT+ Maxim Integrated Products, MAX5097AEVKIT+ Datasheet

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MAX5097AEVKIT+

Manufacturer Part Number
MAX5097AEVKIT+
Description
EVAL KIT FOR MAX5097A
Manufacturer
Maxim Integrated Products
Datasheets
1.MAX5097AATE.pdf (21 pages)
2.MAX5097AEVKIT.pdf (6 pages)

Specifications of MAX5097AEVKIT+

Main Purpose
DC/DC, Step Down
Outputs And Type
1, Non-Isolated
Voltage - Output
3.3V
Current - Output
600mA
Voltage - Input
5 ~ 40V
Regulator Topology
Buck
Frequency - Switching
330kHz
Board Type
Fully Populated
Utilized Ic / Part
MAX5097A
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Power - Output
-
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
The MAX5096/MAX5097 easy-to-use, Dual Mode™,
DC-DC converters operate as LDO (low dropout) or
switch-mode buck converters. At a high output load,
the converters operate as high-efficiency pulse-width-
modulated (PWM) switch-mode converters and reduce
the power dissipation. The devices switch to a low-qui-
escent-current (I
During the key-off condition, the system’s microcon-
troller drives the LDO/BUCK input on the fly and forces
the MAX5096/MAX5097 into LDO Mode, thereby reduc-
ing the quiescent current significantly.
In Buck Mode, the MAX5096/MAX5097 operate from a 5V
to 40V input voltage range and deliver up to 600mA of
load current with excellent load and line regulation. The
fixed-switching frequency versions of 135kHz and
330kHz are available. The MAX5096/MAX5097 DC-DC
internal oscillator can be synchronized to an external
clock. External compensation and a current-mode control
scheme make it easy to design with.
In LDO Mode, the MAX5096/MAX5097 operate from a
4V to 40V input voltage. The LDO Mode operation is
intended for a lower output load current of up to
100mA. The quiescent current at 100µA load in LDO
Mode is only 41µA (typ).
The MAX5096/MAX5097 feature an enable input that
shuts down the device, reducing the current consump-
tion to 6µA (typ). Additional features include a power-on
reset output with a capacitor-adjustable timeout period,
programmable soft-start, output tracking, output over-
load, short-circuit and thermal shutdown protections.
The MAX5096/MAX5097 operate over the -40°C to
+125°C automotive temperature range and are avail-
able in thermally enhanced 20-pin TSSOP or 16-pin
TQFN packages.
19-0603; Rev 2; 9/07
Dual Mode is a trademark of Maxim Integrated Products, Inc.
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.
Automotive
Industrial
Quiescent-Current Linear Regulator Mode
Q
________________________________________________________________ Maxim Integrated Products
) LDO mode of operation at light load.
40V, 600mA Buck Converters with Low-
General Description
Applications
♦ High-Efficiency Switcher Mode (Buck Mode) or
♦ Wide Operating Input Voltage Range
♦ Fixed 3.3V or 5V and Adjustable (1.24V to 11V)
♦ 6μA (typ) Shutdown Current
♦ Fixed 135kHz or 330kHz Switching Frequency
♦ External Frequency Synchronization
♦ Programmable Soft-Start
♦ Integrated Microprocessor Reset (RESET) Circuit
♦ Thermal and Short-Circuit Protection
♦ -40°C to +125°C Automotive Temperature Range
♦ Thermally-Enhanced Package Dissipates
+Denotes lead-free package.
*EP = Exposed pad.
MAX5096AATE+ -40°C to +125°C 16 TQFN-EP*
MAX5096BATE+ -40°C to +125°C 16 TQFN-EP*
MAX5096AAUP+ -40°C to +125°C 20 TSSOP-EP*
MAX5096BAUP+ -40°C to +125°C 20 TSSOP-EP*
MAX5097AATE+ -40°C to +125°C 16 TQFN-EP*
MAX5097BATE+ -40°C to +125°C 16 TQFN-EP*
MAX5097AAUP+ -40°C to +125°C 20 TSSOP-EP*
MAX5097BAUP+ -40°C to +125°C 20 TSSOP-EP*
TOP VIEW
RESET
PGND
SGND
Low-Quiescent-Current Linear Regulator
(LDO Mode) Operation
Output Voltage Versions
with Programmable Timeout Period
BP
+5V to +40V Buck Mode
+4V to +40V LDO Mode
2.6W at T
1.7W at T
PART
1
2
3
4
+
16
5
15
MAX5096
MAX5097
6
TQFN
A
A
14
7
= +70°C (16-Pin TQFN)
= +70°C (20-Pin TSSOP)
TEMP RANGE
13
8
Ordering Information
12
11
10
9
Pin Configurations
EN
OUT
ADJ
LDO/BUCK
TOP VIEW
PIN-PACKAGE
RESET
PGND
SGND
SYNC
N.C.
BP
SS
IN
IN
IN
10
1
2
3
4
5
6
7
8
9
+
MAX5096
MAX5097
TSSOP
Features
T1655-2
T1655-2
T1655-2
T1655-2
U20E-4
U20E-4
U20E-4
U20E-4
CODE
20
19
18
17
16
15
14
13
12
11
PKG
LX
LX
N.C.
EN
OUT
ADJ
N.C.
COMP
CT
LDO/BUCK
1

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MAX5097AEVKIT+ Summary of contents

Page 1

... TSSOP or 16-pin TQFN packages. Automotive Industrial Dual Mode is a trademark of Maxim Integrated Products, Inc. ________________________________________________________________ Maxim Integrated Products For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com. ♦ High-Efficiency Switcher Mode (Buck Mode) or ...

Page 2

Buck Converters with Low- Quiescent-Current Linear Regulator Mode ABSOLUTE MAXIMUM RATINGS (All voltages referenced to PGND, unless otherwise noted.) IN (transient, 1ms) ..................................................-0.3V to +45V SGND ....................................................................-0.3V to +0.3V LX....................................................................- Current ................................................................................2A EN ................................................................-0.3V to ...

Page 3

Buck Converters with Low- Quiescent-Current Linear Regulator Mode ELECTRICAL CHARACTERISTICS (continued +14V 1mA 100µ OUT IN -40°C to +125°C, unless otherwise noted. Typical values are at T PARAMETER SYMBOL BUCK ...

Page 4

Buck Converters with Low- Quiescent-Current Linear Regulator Mode ELECTRICAL CHARACTERISTICS (continued +14V 1mA 100µ OUT IN -40°C to +125°C, unless otherwise noted. Typical values are at T PARAMETER SYMBOL Output ...

Page 5

Buck Converters with Low- Quiescent-Current Linear Regulator Mode ELECTRICAL CHARACTERISTICS (continued +14V 1mA 100µ OUT IN -40°C to +125°C, unless otherwise noted. Typical values are at T PARAMETER SYMBOL EN ...

Page 6

Buck Converters with Low- Quiescent-Current Linear Regulator Mode (V = +14V +2.4V, MAX5097AATE+, Figures 2 and OUTPUT VOLTAGE vs. INPUT VOLTAGE (LDO MODE) 4.0 3.5 3.0 2.5 2.0 1.5 1.0 0.5 I ...

Page 7

Buck Converters with Low- Quiescent-Current Linear Regulator Mode (V = +14V +2.4V, MAX5097AATE+, Figures 2 and EFFICIENCY vs. LOAD CURRENT (V = 5V) OUT 100 14V ...

Page 8

Buck Converters with Low- Quiescent-Current Linear Regulator Mode (V = +14V +2.4V, MAX5097AATE+, Figures 2 and VOLTAGE AND INDUCTOR CURRENT MAX5096 toc19 OUT V LX 5V/div INDUCTOR CURRENT ...

Page 9

Buck Converters with Low- Quiescent-Current Linear Regulator Mode PIN NAME TQFN TSSOP 1 4 PGND 2 5 SGND RESET SYNC COMP 9 13 ...

Page 10

Buck Converters with Low- Quiescent-Current Linear Regulator Mode OUT OSCILLATOR AND RAMP GENERATOR DC-DC ENABLE PWM COMPARATOR COMP R C SYNCRO SYNC LDO/BUCK MODE SELECTOR MAX5096 ...

Page 11

Buck Converters with Low- Quiescent-Current Linear Regulator Mode Detailed Description The MAX5096/MAX5097 are easy-to-use, high-efficien- cy, PWM current-mode, step-down switching convert- ers in normal operation. The MAX5096/MAX5097 have an internal high-side p-channel 0.9Ω switch and use a low ...

Page 12

Buck Converters with Low- Quiescent-Current Linear Regulator Mode 100μ 100kΩ 22pF 1.2nF C SS 0.047μF C 0.01μF Figure 2. Fixed Output Voltage Configuration Output Voltage Tracking/Sequencing The output ...

Page 13

Buck Converters with Low- Quiescent-Current Linear Regulator Mode V OUT3 V OUT2 V OUT1 SOFT-START RATIOMETRIC TRACKING OUTPUTS V OUT1 V OUT2 V OUT3 SOFT-START SEQUENCED OUTPUTS Figure 3. Output Voltage Tracking/Sequencing lower end of the AM band. ...

Page 14

Buck Converters with Low- Quiescent-Current Linear Regulator Mode 5V TO 40V 100μ Figure 4. Adjustable Output Voltage Configuration use typical values of V and ...

Page 15

Buck Converters with Low- Quiescent-Current Linear Regulator Mode ripple is mainly composed of ΔV capacitor discharge) and ΔV ESR age drop across the ESR of the output capacitor). Normally, a good approximation of the output voltage ripple is ...

Page 16

Buck Converters with Low- Quiescent-Current Linear Regulator Mode Compensation Network The MAX5096/MAX5097 in LDO Mode are compensat- ed internally with a compensation network around the LDO error amplifier. When in Buck Mode, the DC-DC g amplifier must be ...

Page 17

Buck Converters with Low- Quiescent-Current Linear Regulator Mode 3) Connect the exposed pad of the IC to the SGND plane. Do not make a direct connection between the exposed pad plane and SGND (pin 2) under the IC. ...

Page 18

Buck Converters with Low- Quiescent-Current Linear Regulator Mode (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information www.maxim-ic.com/packages.) 18 ______________________________________________________________________________________ Package Information ...

Page 19

Buck Converters with Low- Quiescent-Current Linear Regulator Mode (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information www.maxim-ic.com/packages.) ______________________________________________________________________________________ Package Information (continued) 19 ...

Page 20

Buck Converters with Low- Quiescent-Current Linear Regulator Mode (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information www.maxim-ic.com/packages ______________________________________________________________________________________ Package Information (continued) ...

Page 21

... Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 ____________________ 21 © 2007 Maxim Integrated Products ...

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