Diodes AP3421/A/B - Manual (Page 5)

Preliminary Datasheet
1.3MHz, Dual 1.0A Synchronous Step-down Converters AP3421/A/B
Feb. 2013 Rev. 1. 4 BCD Semiconductor Manufacturing Limited
5
Ordering Information
AP3421 -
Circuit Type
A: AP3421A
B: AP3421B
Blank: AP3421
Package
DN: DFN-3×3-10
Package
Temperature
Range
Part Number Marking ID Packing Type
DFN-3×3-10 -40 to 85°C
AP3421DNTR-G1 BCB
Tape & Reel AP3421ADNTR-G1 BDD
AP3421BDNTR-G1 BDE
BCD Semiconductor's Pb-free products, as designated with "G1" suffix in the part number, are RoHS compliant
and green.
Absolute Maximum Ratings (Note 1)
Parameter Symbol Value Unit
Input Voltage V
IN
-0.3 to 7 V
Feedback Voltage V
FB
-0.3 to V
IN
+0.3 V
E/S Pin Voltage V
E/S
-0.3 to V
IN
+0.3 V
SW1, SW2 Pin Voltage V
SW
V
PGND
-1 to V
IN
+1 V
Thermal Resistance
θ
JA
33 ºC /W
Operating Junction Temperature T
J
150 ºC
Storage Temperature T
STG
-25 to 150 ºC
Lead Temperature (Soldering, 10sec) T
LEAD
260 ºC
Note 1: Stresses greater than those listed under “Absolute Maximum Ratings” may cause permanent damage to
the device. These are stress ratings only, and functional operation of the device at these or any other conditions
beyond those indicated under “Recommended Operating Conditions” is not implied. Exposure to “Absolute
Maximum Ratings” for extended periods may affect device reliability.
Recommended Operating Conditions
Parameter Symbol Min Max Unit
Input Voltage V
IN
AP3421 4.5 5.5
V
AP3421A/B 3.0 5.5
VO1 Maximum Output Current I
O1
(Max) 1 A
VO2 Maximum Output Current I
O2
(Max) 1 A
Operating Ambient Temperature T
A
-40 85
°C
G1: Green
TR: Tape & Reel