MAX1698EUB Maxim Integrated Products, MAX1698EUB Datasheet - Page 5

• Manufacturer Part Number: MAX1698EUB
• Description: IC LED DRVR WT/CLR BCKLGT 10MSOP
• Manufacturer: Maxim Integrated Products
• Type: Backlight, White LED, Color LEDr

Specifications of MAX1698EUB

• Topology: Step-Up (Boost)
• Number Of Outputs: 1
• Internal Driver: No
• Type - Primary: Backlight
• Type - Secondary: White LED
• Voltage - Supply: 2.7 V ~ 5.5 V
• Mounting Type: Surface Mount
• Package / Case: 10-MSOP, Micro10™, 10-uMAX, 10-uSOP
• Operating Temperature: -40°C ~ 85°C
• Internal Switch(s): Yes
• Efficiency: 90%
• Low Level Output Current: 200 mA
• High Level Output Current: 200 mA
• Operating Supply Voltage: 2.7 V to 5.5 V
• Maximum Power Dissipation: 444 mW
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Minimum Operating Temperature: - 40 C
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Voltage - Output: -
• Frequency: -
• Current - Output / Channel: -

Figure 1. Functional Diagram
PIN
5, 7
10
1
2
3
4
6
8
9
SHDN
GND
ADJ
V
CC
FB
NAME
PGND
SHDN
GND
REF
ADJ
V
EXT
CS
FB
CC
UNDERVOLTAGE
SHUTDOWN
LOCKOUT/
_______________________________________________________________________________________
IC Supply Voltage Input. Power for internal circuitry. Input range is 2.7V to 5.5V.
Active-Low Shutdown Input. In shutdown, the MOSFET turns off, but a current path still exists between the
input and output. The minimum forward voltage of the LED array must exceed the maximum V
that the LEDs are off in shutdown.
1.25V Reference Output. Capable of sourcing 150µA for external loads. This pin is internally compensated.
Do not connect any bypass capacitors at REF.
Adjust Input. Allows dynamic adjustment of the output current. FB regulates to 300mV when ADJ = REF.
Ground
Feedback Input. Connect to the external LED current-sense feedback resistor.
Power Ground
FET Current-Sense Input
Gate Driver Output
MAX1698
Current Regulator for LEDs
SOFT-START
MIN t
MAX t
High-Efficiency Step-Up
OFF
ON
TRIG
TRIG
FUNCTION
Q
Q
REFERENCE
1.25V
Pin Description
V
CC
BATT
to ensure
CS
EXT
PGND
REF
5