MAX17014EVKIT+ Maxim Integrated Products, MAX17014EVKIT+ Datasheet - Page 15

• Manufacturer Part Number: MAX17014EVKIT+
• Description: KIT EVAL FOR MAX17014
• Manufacturer: Maxim Integrated Products

Specifications of MAX17014EVKIT+

• Main Purpose: Special Purpose DC/DC, LCD Supply
• Outputs And Type: 4, Non-Isolated
• Power - Output: 32.9W
• Voltage - Output: 3.3V, 16V, -6V, 35V
• Current - Output: 2A, 1.5A, 100mA, 50mA
• Voltage - Input: 10.8 ~ 13.2V
• Regulator Topology: Boost, Buck
• Frequency - Switching: 1.2MHz
• Board Type: Fully Populated
• Utilized Ic / Part: MAX17014
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

23, 24
25, 26
35, 36
37, 38
PIN
27
28
29
30
31
32
33
39
40
41
42
43
44
45
46
47
48
EP
NAME
COMP
OGND
GND1
NEG2
NEG1
POS2
OUT2
DEL2
OVIN
FSEL
SWO
GND
EN2
EN1
FB1
LX2
LX1
SWI
IN2
SUI
V
______________________________________________________________________________________
VL
IN
Step-Down Regulator Switching Node. LX2 is the source of the internal n-channel MOSFET
connected between IN2 and LX2. Connect the inductor and Schottky catch diode close to both LX2
pins to minimize the trace area for low EMI.
Step-Down Regulator Power Input. Drain of the internal n-channel MOSFET connected between IN2
and LX2.
Input of the Internal 5V Linear Regulator and the Startup Circuitry. Bypass V
close to the IC.
Frequency-Select Pin. Connect FSEL to GND for 600kHz operation. Connect to VL or V
operation.
Step-Up Regulator and Positive Charge-Pump Delay Input. Connect a capacitor from DEL2 and
GND to set the delay time between EN2 and the startup of these regulators, or between the step-
down startup and the startup of these regulators if EN1 is high before the step-down starts. An 8μA
current source charges C
or EN2 is low or when VL is below its UVLO threshold.
5V Internal Linear Regulator Output. Bypass VL to GND with 1μF minimum. Provides power for the
internal MOSFET driving circuit, the PWM controllers, charge-pump regulators, logic, and reference
and other analog circuitry. Provides 25mA load current when all switching regulators are enabled.
VL is active whenever V
Compensation Pin for the Step-Up Error Amplifier. Connect a series resistor and capacitor from
COMP to ground.
Step-Up and Positive Charge-Pump Regulator Enable Input. Input HIGH also enables DEL2 pullup
current. EN2 is inactive when EN1 is low. See the Power-Up Sequence section for details.
Step-Down and Negative Charge-Pump Regulator Enable Input. Input HIGH also enables DEL1
pullup current.
Step-Up Regulator Power Ground. Source of the internal power n-channel MOSFET.
Step-Up Regulator Power MOSFET n-Channel Drain and Switching Node. Connect the inductor and
Schottky catch diode to both LX1 pins and minimize the trace area for lowest EMI.
Step-Up Regulator Internal p-Channel MOSFET Pass Switch Source Input. Connect to the cathode of
the step-up regulator Schottky catch diode.
Step-Up Regulator Internal p-Channel MOSFET Pass Switch Gate Input. Connect a capacitor from
SUI to SWI to set the delay time. A 30μA current source pulls down on C
Boost Regulator Feedback Input. Connect FB1 to the center of a resistive voltage-divider between
the boost regulator output and GND to set the boost regulator output voltage. Place the resistive
voltage-divider within 5mm of FB1.
Step-Up Regulator Internal p-Channel MOSFET Pass Switch Drain Output
Operational Amplifier Power Input
Operational Amplifier 2 Inverting Input
Operational Amplifier 2 Noninverting Input
Operational Amplifier Output 2
Operational Amplifier Power Ground
Operational Amplifier 1 Inverting Input
Exposed Paddle = GND
IN
DEL2
is above V
Power Supply for LCD TVs
. DEL2 is internally pulled to GND through 10
Low-Cost Multiple-Output
IN
UVLO threshold.
FUNCTION
Pin Description (continued)
SUI
IN
when DEL2 is high.
resistance when EN1
to GND with 0.22μF
IN
for 1.2MHz
15