MAX6470 Datasheet, PDF (1/4 Pages) Maxim Integrated Products – Evaluation Kit

19-2585; Rev 0; 9/02
MAX6470 Evaluation Kit
General Description
The MAX6470 evaluation kit (EV kit) circuit features the
MAX6470 low-dropout linear regulator with an integrat-
ed microprocessor reset output signal. The circuit pro-
vides a preset 3.3V output from a 3.6V to 5.5V input
range and delivers 300mA of load current. The
MAX6470 EV kit is a fully assembled and tested sur-
face-mount circuit board that accommodates the
MAX6470 IC in both the 6-pin SOT23 and 8-pin QFN
packages. The EV kit board can also be used to evalu-
ate the MAX6469–MAX6476 linear regulators. For out-
put voltages less than 3.3V, the input voltage range can
go down to 2.5V.
Features
o Preset 3.3V Output
o Adjustable Output Voltage (1.2V to 5V)
o 300mA Output Current
o 57mV (typ) Dropout Voltage at 150mA Output
Current
o Microprocessor RESET Output Signal with
Timeout Period
o Supports 6-Pin SOT23 and 8-Pin QFN Packages
o Fully Assembled and Tested
Component List
DESIGNATION
C1
C2
C3
QTY
1
1
0
DESCRIPTION
1µF ±10%, 6.3V X5R ceramic
capacitor (0603)
Taiyo Yuden JMK107BJ105KA or
TDK C1608X5R1A105K
3.3µF ±10%, 6.3V X5R ceramic
capacitor (0805)
Taiyo Yuden JMK212BJ335KG or
TDK C2012X5R1A335K
Not installed, capacitor (0603)
C4
0 Not installed, capacitor (0805)
R1, R2, R4, R5 0 Not installed, resistors (0603)
R3
1 100kΩ ±5% resistor (0603)
U1
1 ^{MAX6470UT33BD3 (6-pin SOT23),}
top mark ABFG
U2
0 Not installed (8-pin QFN)
JU1, JU2
2 3-pin headers
None
2 Shunts (JU1, JU2)
None
1 MAX6470 PC board
None
1 MAX6470 data sheet
None
1 MAX6470 EV kit data sheet
PART
MAX6470EVKIT
Ordering Information
TEMP RANGE
0°C to +70°C
IC PACKAGE
6 SOT23
Quick Start
The MAX6470 EV kit is fully assembled and tested.
Follow these steps to verify board operation. Do not
turn on the power supply until all connections are
completed.
1) Verify that shunts are installed across pins 1 and 2
of jumpers JU1 (SHDN) and JU2 (RESET).
2) Connect voltmeters to the VOUT and RESET PC
board pads.
3) Connect a 3.6V to 5.5V DC power supply to the VIN
pad. Connect the supply ground to the GND pad.
4) Turn on the power supply.
5) Verify that VOUT and RESET each measure 3.3V.
6) Decrease the power supply to 2.8V.
7) Verify that RESET measures approximately 0V.
Component Suppliers
SUPPLIER
PHONE
FAX
Taiyo Yuden
TDK
800-348-2496
847-803-6100
847-925-0899
847-390-4405
Note: Please indicate that you are using the MAX6470 when contacting these component suppliers.
WEBSITE
www.t-yuden.com
www.component.tdk.com
________________________________________________________________ Maxim Integrated Products 1
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.