MAX1536 Evaluation Kit
Evaluates: MAX1536
Component Suppliers
SUPPLIER
Sanyo
Sumida
Taiyo Yuden
TDK
PHONE
619-661-6322
847-545-6700
800-348-2496
847-803-6100
FAX
619-661-1055
847-545-6720
847-925-0899
847-390-4405
WEBSITE
www.sanyo.com
www.sumida.com
www.t-yuden.com
www.component.tdk.com
Note:
Please indicate that you are using the MAX1536 when contacting these component suppliers.
Quick Start
The MAX1536 EV kit is a fully assembled and tested
surface-mount board. Follow the steps below for proper
board operation.
Do not turn on the power supply
until all connections are completed:
1) Connect a voltmeter and load (if any) from VOUT
to GND.
2) Verify that the shunts are across JU1 (SHDN) pins 1
and 2, JU2 (SKIP) pins 1 and 2, JU3 (GATE) pins 2
and 3, and JU4 (FBLANK) pins 1 and 2.
3) Connect a 3.0V to 5.5V supply to the pads marked
VIN and GND.
4) Turn on the power supply and verify that the output
voltage is 1.8V.
See the
Evaluating Other Output Voltages
section for
different output voltages.
Table 1. Jumper JU1 Functions (SHDN)
SHUNT
LOCATION
1 and 2
(default)
2 and 3
Not
installed
SHDN
PIN
Connected to VCC
Connected to GND
SHDN
must be driven
by an external signal
MAX1536 OUTPUT
MAX1536 enabled,
VOUT = 1.8V
MAX1536 disabled
MAX1536 output
depends on external
SHDN
signal levels
Table 2. Jumper JU2 Functions (SKIP)
SHUNT
LOCATION
1 and 2
(default)
SKIP
PIN
Connected to VCC
MODE OF
OPERATION
Constant-off-time
forced-PWM mode
Automatic PWM/PFM
mode, high-efficiency
idle mode under light
loads, and PWM mode
under heavy loads
Detailed Description
Jumper Selection
In shutdown mode, the MAX1536 reduces the supply
current to 0.2碌A (typ). Jumper JU1 controls the
MAX1536鈥檚 shutdown function. Table 1 lists jumper JU1
functions.
The MAX1536 has two modes of operation: low-noise,
constant-off-time, forced-PWM mode and automatic
PWM/PFM mode. Jumper JU2 controls the MAX1536鈥檚
operation function. Table 2 lists jumper JU2 functions.
The MAX1536 EV kit is preset to a dynamically selec-
table 1.5V/1.8V output. The EV kit incorporates jumper
JU3 to control the dynamic outputs. Table 3 lists
jumper JU3 functions.
Jumper JU4 controls the fault blanking control input
(FBLANK). The FBLANK input determines how long the
MAX1536 maintains forced-PWM operation and forces
PGOOD high impedance when a transition is detected
on the GATE pin. Table 4 lists jumper JU4 functions.
2 and 3
Connected to GND
Table 3. Jumper JU3 Functions (GATE)
SHUNT
LOCATION
1 and 2
2 and 3
(default)
Not
installed
GATE PIN
Connected to VCC
Connected to GND
GATE must be driven
by an external signal
MAX1536 OUTPUT
VOUT = 1.5V
VOUT = 1.8V
V
OUT
depends on
external GATE signal
levels
2
_______________________________________________________________________________________
1
2
3
4
5
6
