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Maxim Integrated Semiconductor Electronic Components Datasheet

MAX17019 Datasheet

High-Input-Voltage Quad-Output Controller

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MAX17019
EVALUATION KIT AVAILABLE
High-Input-Voltage Quad-Output Controller
General Description
The MAX17019 is a high-input-voltage quad-output con-
troller (up to 38V). The MAX17019 provides a compact,
low-cost controller capable of providing four independent
regulators—a main stage, a 3AP-P internal stepdown, a
5AP-P internal step-down, and a 2A source/sink linear
regulator. The input voltage is up to 38V.
The internal switching regulators include 5V synchronous
MOSFETs that can be powered directly from a single Li+
cell or from the main 3.3V/5V power stages. Finally, the
linear regulator is capable of sourcing and sinking 2A to
support DDR termination requirements or to generate a
fixed output voltage.
The step-down converters use a peak current-mode,
fixed-frequency control scheme—an easy to imple-
ment architecture that does not sacrifice fast-transient
response. This architecture also supports peak current-
limit protection and pulse-skipping operation to maintain
high efficiency under light-load conditions.
Separate enable inputs and independent open-drain
power-good outputs allow flexible power sequencing. A
soft-start function gradually ramps up the output voltage to
reduce the inrush current. Disabled regulators enter high-
impedance states to avoid negative output voltage created
by rapidly discharging the output through the low-side
MOSFET. The MAX17019 also includes output undervolt-
age, output overvoltage, and thermal-fault protection.
The MAX17019 is available in a 48-pin, 6mm x 6mm thin
QFN package.
Applications
● Embedded Control Systems
● Set-Top Boxes
Benefits and Features
● Fixed-Frequency, Current-Mode Controllers
● 5.5V to 38V Input Range (Step-Down)
● 1x Step-Down Controller
● 1x Internal 5AP-P Step-Down Regulator
● 1x Internal 3AP-P Step-Down Regulator
● 1x 2A Source/Sink Linear Regulator with Dynamic
REFIN
● Internal BST Diodes
● Internal 5V 50mA Linear Regulator
● Fault Protection—Undervoltage, Overvoltage,
Thermal, Peak Current Limit
● Independent Enable Inputs and Power-Good Outputs
● Voltage-Controlled Soft-Start
● High-Impedance Shutdown
10μA (typ) Shutdown Current
Ordering Information appears at end of data sheet.
19-4225; Rev 2; 5/18


Maxim Integrated Semiconductor Electronic Components Datasheet

MAX17019 Datasheet

High-Input-Voltage Quad-Output Controller

No Preview Available !

MAX17019
High-Input-Voltage Quad-Output Controller
Absolute Maximum Ratings
INLDO, SHDN to GND............................................-0.3V to +43V
LDO5, INA, VDD, VCC to GND.................................-0.3V to +6V
DHA to LXA.............................................-0.3V to (VBSTA + 0.3V)
ONA, ONB, ONC, OND to GND...............................-0.3V to +6V
POKA, POKB, POKC, POKD to GND.........-0.3V to (VCC + 0.3V)
REF, REFIND, FREQ, UP/DN,
SYNC to GND.......................................-0.3V to (VCC + 0.3V)
FBA, FBB, FBC, FBD to GND.....................-0.3V to (VCC + 0.3V)
BYP to GND...........................................-0.3V to (VLDO5 + 0.3V)
CSPA, CSNA to GND .................................-0.3V to (VCC + 0.3V)
DLA to GND................................................-0.3V to (VDD + 0.3V)
INBC, IND to GND....................................................-0.3V to +6V
OUTD to GND...........................................-0.3V to (VIND + 0.3V)
VTTR to GND...........................................-0.3V to (VBYP + 0.3V)
LXB, LXC to GND....................................-1.0V to (VINBC + 0.3V)
BSTB to GND...................................(VDD - 0.3V) to (VLXB + 6V)
BSTC to GND..................................(VDD - 0.3V) to (VLXC + 6V)
BSTA to GND...................................(VDD - 0.3V) to (VLXA + 6V)
REF Short-Circuit Current......................................................1mA
Continuous Power Dissipation (TA = +70°C)
TQFN (derate 37mW/°C above +70°C)............................2.9W
(Multilayer Board)
Operating Temperature Range ..........................-40°C to +105°C
Junction Temperature.......................................................+150°C
Storage Temperature Range ..............................-65°C to +150°C
Lead Temperature (soldering, 10s)...................................+300°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.
Package Information
PACKAGE TYPE: 48-PIN TQFN
Package Code
Outline Number
Land Pattern Number
T4866+2
21-0141
90-0007
For the latest package outline information and land patterns (footprints), go to www.maximintegrated.com/packages. Note that a “+”,
“#”, or “-” in the package code indicates RoHS status only. Package drawings may show a different suffix character, but the drawing
pertains to the package regardless of RoHS status.
Electrical Characteristics (TA = 0°C to +85°C)
(Standard Application Circuit, VINLDO = 12V, VINA = VINBC = VDD = VCC = VBYP = VCSPA = VCSNA = 5V, VIND = 1.8V, VSHDN = VONA
= VONB = VONC = VOND = 5V, IREF = ILDO5 = IOUTD = no load, FREQ = GND, UP/DN = VCC, TA = 0°C to +85°C, unless otherwise
noted. Typical values are at TA = +25°C.) (Note 1)
PARAMETER
SYMBOL
CONDITIONS
Input Voltage Range
UP/DN = LDO5, INLDO, INA = LDO5
INA Undervoltage Threshold
VINA(UVLO)
UP/DN = LDO5, INA = VCC, rising edge,
hysteresis = 160mV
INBC Input Voltage Range
SUPPLY CURRENTS
VINLDO Shutdown Supply Current
VINLDO Suspend Supply Current
IIN(SHDN)
IIN(SUS)
VINLDO = 5.5V to 38V, SHDN = GND
VINLDO = 5.5V to 38V, ON_ = GND,
SHDN = INLDO
MIN TYP MAX UNITS
5.5
38
V
4.0
4.2
4.4
V
2.3
5.5
V
10
15
µA
50
80
µA
VCC Shutdown Supply Current
VDD Shutdown Supply Current
INA Shutdown Current
SHDN = ONA = ONB = ONC = OND =
GND, TA = +25°C
SHDN = ONA = ONB = ONC = OND =
GND, TA = +25°C
IINA
SHDN = ONA = ONB = ONC = OND =
GND, UP/DN = VCC
0.1
1
µA
0.1
1
µA
7
10
µA
www.maximintegrated.com
Maxim Integrated 2



Part Number MAX17019
Description High-Input-Voltage Quad-Output Controller
Maker Maxim Integrated
Total Page 3 Pages
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MAX17019 Datasheet PDF





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