ISL78310 Datasheet, PDF (2/13 Pages) Intersil Corporation – High Performance 1A LDO

ISL78310
Pin Descriptions
PIN
NUMBER
1, 2
3
4
5
6
7
8
9, 10
PIN NAME
VOUT
SENSE/ADJ
PG
GND
SS
ENABLE
NC
VIN
EPAD
DESCRIPTION
Regulated output voltage. A minimum 10µF X5R/X7R output capacitor is required for stability. See “External
Capacitor Requirements” on page 9 for more details.
For internally fixed V_OUT option, this pin provides output voltage feedback. By connecting this pin to the output rail
at the load, small voltage drops caused by PCB trace resistance can be eliminated.
For the adjustable output voltage option, this pin is connected to the feedback resistor divider and provides voltage
feedback signals for the LDO to set the outpt voltage.
This is an open drain logic output used to indicate the status of the output voltage. Logic low indicates V_OUT is not
in regulation. Must be grounded if not used.
Ground.
External capacitor on this pin adjusts startup ramp and controls in-rush current.
V_IN independent chip enable. TTL and CMOS compatible.
Do not connect this pin to ground or supply. Leave floating.
Input supply pin. A minimum 10µF X5R/X7R input capacitor is required for stability. See “External Capacitor
Requirements” on page 9 for more details.
EPAD at ground potential. Soldering it directly to GND plane is required for thermal considerations. See “Heatsinking
the DFN Package” on page 11 for more details.
Ordering Information
PART NUMBER
(Notes 1, 3, 4)
PART MARKING
V_OUT VOLTAGE
(Note 2)
TEMP RANGE (°C)
PACKAGE
(Pb-Free)
PKG DWG. #
ISL78310ARAJZ
DZAE
ADJ
-40 to +125
10 Ld 3x3 DFN
L10.3x3
ISL78310ARAJZ-TR5303 DZAE
ADJ
-40 to +125
10 Ld 3x3 DFN
L10.3x3
NOTES:
1. Add “-T*” suffix for tape and reel. Please refer to TB347 for details on reel specifications.
2. For other output voltages, contact Intersil Marketing.
3. These Intersil Pb-free plastic packaged products employ special Pb-free material sets, molding compounds/die attach materials, and 100% matte
tin plate plus anneal (e3 termination finish, which is RoHS compliant and compatible with both SnPb and Pb-free soldering operations). Intersil
Pb-free products are MSL classified at Pb-free peak reflow temperatures that meet or exceed the Pb-free requirements of IPC/JEDEC J STD-020.
4. For Moisture Sensitivity Level (MSL), please see device information page for ISL78310. For more information on MSL please see techbrief TB363.
2
FN7810.0
February 17, 2011