MAX5988BEVKIT# Maxim Integrated, MAX5988BEVKIT# Datasheet - Page 10

• Manufacturer Part Number: MAX5988BEVKIT#
• Description: Power Management IC Development Tools MAX5988B Eval Kit
• Manufacturer: Maxim Integrated

Specifications of MAX5988BEVKIT#

• Rohs: yes

Maxim Integrated
IEEE 802.3af-Compliant, High-Efficiency, Class 1/Class 2,
PIN
1
2
3
4
5
6
Powered Devices with Integrated DC-DC Converter
LDO_OUT
LDO_IN
NAME
AUX
LED
LX
FB
Auxiliary Voltage Input. Auxiliary input to the internal regulator, VDRV. Connect AUX to the output of
the buck converter, if the output voltage is greater than 4.75V, to back bias the internal circuitry and
increase efficiency. Connect to a clean ground when not used.
Inductor Connection. Inductor connection for the internal DC-DC converter.
LED Driver Output. In sleep mode, LED sources a periodic current (I
cycle.
LDO Input Voltage. Connect LDO_IN to output when used; otherwise, connect to GND. Connect a
minimum 1FF bypass capacitor between LDO_IN and GND.
LDO Output Voltage. Connect a minimum 1FF output capacitor between LDO_OUT and GND.
Feedback. Feedback input for the DC-DC buck converter. Connect FB to a resistive divider from the
output to GND to adjust the output voltage.
*EXPOSED PAD, CONNECT EP TO GND.
TOP VIEW
PGND
RREF
WAD
V
V
DD
CC
16
17
18
19
20
15
1
+
4mm × 4mm
14
2
MAX5988A
MAX5988B
TQFN
13
3
12
4
*EP
FUNCTION
11
5
MAX5988A/MAX5988B
10 ULP
9
8
7
6
SL
VDRV
GND
FB
LED
) at 250Hz with 25% duty
Pin Configuration
Pin Description
10