MAX1688EVKIT Maxim Integrated, MAX1688EVKIT Datasheet - Page 2

• Manufacturer Part Number: MAX1688EVKIT
• Description: Power Management IC Development Tools Evaluation Kit for the MAX1687 MAX1688
• Manufacturer: Maxim Integrated
• Series: MAX1687, MAX1688r

Specifications of MAX1688EVKIT

• Output Voltage: 6 V
• Output Current: 2.5 A

MAX1688 Evaluation Kit
The MAX1688 EV kit is designed for supplying short-dura -
tion, high-current bursts for GSM cell phone applications. It
combines a boost switching regulator, an N-channel power
MOSFET, a P-channel synchronous rectifier, and a preci-
sion reference in a single, tiny 16-pin TSSOP package. The
EV kit accepts a positive input between 2.7V and 6V and
converts it to a 5V output with less than 500mV output volt -
age droop at 1.4A burst load. The EV kit operates at
600kHz, allowing the use of small external components.
For other applications including component value selec-
tion, refer to the Applications Information section in the
MAX1687/MAX1688 data sheet.
Figure 1. MAX1688 EV Kit Schematic
2
2.7V TO 6V
_______________________________________________________________________________________
ON/OFF
(LIM)
CHG
VIN
VIN
47 F
16V
C1
20k
1%
R3
JU1
Detailed Description
C2
0.1 F
R4
1M
OPEN
R5
10
3
4
1
2
5
7
9
AGND
LX1
LX1
IN
IN
CHG (LIM)
REF
ON
(MAX1687)
MAX1688
10 H
U1
L1
PGND
PGND
OUT
OUT
LX2
LX2
NC
FB
The MAX1688 EV kit can also be used to evaluate the
MAX1687. Follow the steps below to evaluate the
MAX1687.
1) Replace the MAX1688 with a MAX1687EUE.
2) Install a short at location JU1 to run the MAX1687
3) Turn on the power supply.
4) Set up the voltage to the MAX1687’s LIM pad by
continuously or apply a logic signal for ON/ OFF con-
trol.
applying an external voltage to the CHG(LIM) pad or
by completing the voltage divider (R3/R5). Refer to
the Adjusting Current Limit (MAX1687) section of the
MAX1687/MAX1688 data sheet.
13
14
15
16
6
8
12
11
60.4k
1%
20k
1%
R1
R2
C3
1000 F
6.3V
Evaluating the MAX1687
C4
1000 F
6.3V
C5
OPEN
VOUT
5.0V