MAX17509 Converter Datasheet

MAX17509 Datasheet PDF, Equivalent


Part Number

MAX17509

Description

Synchronous Step-Down DC-DC Converter

Manufacture

Maxim Integrated

Total Page 24 Pages
PDF Download
Download MAX17509 Datasheet PDF


MAX17509
MAX17509
EVALUATION KIT AVAILABLE
4.5V–16V, Dual 3A, High-Efficiency, Synchronous Step-Down
DC-DC Converter with Resistor Programmability
General Description
The MAX17509 integrates two 3A internal switch step-down
regulators with programmable features. The device can
be configured as two single-phase independent, 3A power
supplies or as a dual-phase, single-output 6A power
supply. The device operates from 4.5V to 16V input and
generates independently adjustable output voltage in the
ranges of 0.904V to 3.782V and 4.756V to 5.048V, with
±2% system accuracy.
This device provides maximum flexibility to the end-user
by allowing to choose multiple programmable options by
connecting resistors to the configuration pins. Two key
highlights of the device are the self-configured compen-
sation for any output voltage and the ability to program
the slew rate of LX switching nodes to mitigate noise
concerns. In noise-sensitive applications, such as high-
speed multi-gigabit transceivers in FPGAs, RF, and audio
benefit from this unique slew rate control. SYNC input is
provided for synchronized operation of multiple devices
with system clocks.
MAX17509 offers output overvoltage (OV) and
undervoltage (UV) protection, as well as overcurrent
(OC) and undercurrent (UC) protection with a selectable
hiccup/latch option. It operates over the -40°C to +125°C
temperature range, with thermal sensing and shutdown
provided for overtemperature (OT) protection. The device
is available in a 32-pin 5mm x 5mm TQFN package.
Applications
● FPGA and DSP Core Power
● Industrial Control Equipment
● Multiple Point-of-Load (POL) Power Supplies
● Base Station Point-of-Load Regulator
Ordering Information appears at end of data sheet.
Features and Benefits
● Reduces Number of DC-DC Regulators in Inventory
• Output Voltage (0.904V to 3.782V and 4.756V to
5.048V with 20mV Resolution)
Configurable Two Independent Outputs (3A/3A) or
a Dual-Phase Single Output (6A)
● Mitigate Noise Concerns and EMI
• Adjustable Switching Frequency with Selectable
0/180° Phase Shift
• External Frequency Synchronization
• Adjustable Switching Slew Rate
• Passes EN55022 (CISPR22) Class-B Radiated
and Conducted EMI Standard
● Ease of System Design
• All Ceramic Capacitors Solution
Auto-Configured Internal Compensation
• Selectable Hiccup or Brickwall Mode
• Adjustable Soft-Start Rise/Fall Time with Soft Stop
Modes and Prebias Startup
• -40°C to +125°C Operation
● Reliable Operation
• Robust Fault Protections (VIN_UVLO, UV/OV, UC/
OC, OT)
• Power Good
Application Circuit
MAX17509
CVCC
PGOOD1, 2
SYNC
VCC
CAVCC
AVCC
RCOARSE1
COARSE1
RFINE1
FINE1
RSS1
SS1
RCOARSE2
COARSE2
RFINE2
FINE2
RSS2
SS2
RMODE
MODE
EN1, 2
AVCC
IN1
BST1
CBST1
LX1
OUT1
PGND1
IN2
BST2
CBST2
LX2
OUT2
PGND2
VIN
CIN1
L1 VOUT1
COUT1
VIN
CIN2
L2 VOUT2
COUT2
SGND EP
19-7051; Rev 0; 2/15

MAX17509
MAX17509
4.5–16V, Dual 3A, High-Efficiency, Synchronous Step-Down
DC-DC Converter with Resistor Programmability
Absolute Maximum Ratings
IN_ to PGND_..........................................................-0.3V to 22V
BST_ to PGND_.......................................................-0.3V to 28V
BST_ to LX_...............................................................-0.3V to 6V
BST_ to VCC............................................................-0.3V to 22V
LX_ to PGND_....... -0.3V to the lower of +22V or (VIN_ + 0.3V)
VCC to SGND.......... -0.3V to the lower of +6V or (VIN1 + 0.3V)
AVCC to SGND........ -0.3V to the lower of +6V or (VIN1 + 0.3V)
OUT_, EN_, PGOOD_, SYNC, COARSE_, FINE_, SS_,
MODE to SGND.....................................................-0.3V to 6V
PGND_ to SGND....................................................-0.3V to 0.3V
EP to SGND..........................................................-0.3V to +0.3V
Operating Temperature Range...........................-40ºC to +125ºC
Junction Temperature.......................................................+150°C
Storage Temperature Range..............................-65ºC to +160°C
Lead Temperature (soldering, 10s).................................. +300°C
Soldering Temperature (reflow)........................................+260°C
Package Thermal Characteristics (Note 2)
32 TQFN T3255+4
Continuous Power Dissipation (TA = +70°C)
32 TQFN (derate 34.5 mW/°C above +70°C)
(multilayer board) ...................................................2758.6mW
Junction-to-Ambient Thermal Resistance (θJA)
32 TQFN.......................................................................29°C/W
Junction-to-Case Thermal Resistance (θJC)
32 TQFN......................................................................1.7°C/W
Note 1: Package thermal resistances were obtained using the method described in JEDEC specification JESD51-7, using a four-layer
board. For detailed information on package thermal considerations, refer to www.maximintegrated.com/thermal-tutorial.
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.
Electrical Characteristics
(VIN_ = 10V, VOUT_ = 3.3V, CVIN_ = 1µF, CAVCC = 1µF, CVCC = 2.2µF, CBST_ = 0.1µF, TA = TJ = -40°C to +125°C, with typical
value at TA = 25°C, unless otherwise stated) (See Typical Application Circuits) (Note 1).
PARAMETER
SYMBOL
INPUT SUPPLY VIN_ 
IN1-2 Voltage Range
VIN_RANGE
IN1 Standby Current
IIN1_STBY
IN2 Standby Current
IIN2_STBY
IN1-2 Undervoltage Lockout
VIN_UVLO_R
VIN_UVLO_F
IN1-2 Undervoltage Lockout
for VOUT > 4.75V
VIN_UVLO_R
5VOUT
VIN_UVLO_F
5VOUT
ENABLES 
EN_ Rising Threshold
EN_TH_R
EN_ Threshold Hysteresis
EN_TH_HYS
EN_ Input Leakage Current
EN_ILEAK
LDO
VCC Output Voltage Range
VCC_RANGE
VCC Output Voltage (Dropout) VCC_DROP
VCC Current Capability
I_VCC
INTERNAL CHIP INPUT SUPPLY
AVCC UVLO
AVCC_TH_R
AVCC_TH_F
CONDITIONS
 
EN1-2 = SGND (shutdown)
EN1-2 = SGND (shutdown)
Rising
Falling
Rising
Falling
VEN = 5V, TA = 25°C
 
6V < VIN1 < 16V
VIN1 = 4.5 V, IVCC = 20mA
VCC = 4.3V, VIN1 = 6V
Rising
Falling
MIN TYP MAX UNITS
4.5 16 V
1 1.9 mA
10 20 µA
4.0 4.2 4.4
V
3.2 3.4 3.6
V
5.8 6.0 6.2
V
4.1 4.3 4.5
V
1242
-100
1262
250
0
1287
100
mV
mV
nA
4.5
4.3
50
V
V
mA
3.9 V
3.2 V
www.maximintegrated.com
Maxim Integrated 2


Features MAX17509 EVALUATION KIT AVAILABLE 4.5V 16V, Dual 3A, High-Efficiency, Synchr onous Step-Down DC-DC Converter with Re sistor Programmability General Descrip tion The MAX17509 integrates two 3A int ernal switch step-down regulators with programmable features. The device can b e configured as two single-phase indepe ndent, 3A power supplies or as a dual-p hase, single-output 6A power supply. Th e device operates from 4.5V to 16V inpu t and generates independently adjustabl e output voltage in the ranges of 0.904 V to 3.782V and 4.756V to 5.048V, with ±2% system accuracy. This device provi des maximum flexibility to the end-user by allowing to choose multiple program mable options by connecting resistors t o the configuration pins. Two key highl ights of the device are the self-config ured compensation for any output voltag e and the ability to program the slew r ate of LX switching nodes to mitigate n oise concerns. In noise-sensitive appli cations, such as highspeed multi-gigabit transceivers in FPGAs, RF.
Keywords MAX17509, datasheet, pdf, Maxim Integrated, Synchronous, Step-Down, DC-DC, Converter, AX17509, X17509, 17509, MAX1750, MAX175, MAX17, Equivalent, stock, pinout, distributor, price, schematic, inventory, databook, Electronic, Components, Parameters, parts, cross reference, chip, Semiconductor, circuit, Electric, manual, substitute




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