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ISL6721AB

OBSOLETE
Intersil

Boost, Flyback Regulator Positive, Isolation Capable Output Step-Up, Step-Up/Step-Down DC-DC Controller IC 16-SOIC

End of life. Buy from remaining stock or find an alternate.

ISL6721AB is a Boost from Intersil. 1 authorized distributor quotes it on TracedParts, from RM 8.85 at quantity 1, with 20,501 units in stock for immediate despatch. Figures come from the distributors' own APIs, pulled in the catalogue snapshot of 2026-09-25, and are indicative rather than a binding quote.

RoHS COMPLIANTREACH 16-SOIC (0.154", 3.90mm Width) SMD
BEST PRICE @1
RM 8.85
DigiKey · authorized
TOTAL STOCK
20,501
1 source
SHORTEST LEAD
stock
ships from warehouse
AUTHORIZED
1 / 1
tier 1 sources

Who has ISL6721AB in stock, and what does it cost?

1 authorized distributor · pulled from their APIs in the catalogue snapshot of 2026-09-25
QTY pcs
DISTRIBUTOR
STOCK
MOQ
PRICE BREAKS · MYR
LEAD
@250 PCS
TIER 1 - AUTHORIZED DISTRIBUTORfranchised - full warranty - paperwork QA will accept
AUTH
20,501
137
137+8.8531
stock
ex-warehouse
RM 8.8531
RM 2,213.27 total
Buy ↗
What 250 pcs actually costs landed in Malaysia, duty and SST included: RM 2,486.67 RM 9.9467 per unit, DDP · estimate Open estimator →

What are the specifications of ISL6721AB?

24 parameters▾
Device specification
Output TypeTransistor Driver
FunctionStep-Up, Step-Up/Step-Down
Output ConfigurationPositive, Isolation Capable
TopologyBoost, Flyback
Number of Outputs1
Output Phases1
Voltage - Supply (Vcc/Vdd)9V ~ 18V
Frequency - SwitchingUp to 1MHz
Duty Cycle (Max)75%
Synchronous RectifierNo
Clock SyncYes
Control FeaturesCurrent Limit, Frequency Control, Power Good, Soft Start
Operating Temperature-40°C ~ 105°C (TA)
Mounting TypeSurface Mount
Ordering & compliance
ManufacturerIntersil
CategoryDC DC Switching Controllers
Package16-SOIC (0.154", 3.90mm Width)
MountingSurface mount
LifecycleOBSOLETE
RoHSCompliant
Moisture levelNot applicable (through hole)
PackagingTape & reel
Country of origin
HS code

Where can I download the ISL6721AB datasheet?

link supplied by DigiKey▾
PDF
ISL6721AB datasheet
link supplied by DigiKey · Intersil · English
Open datasheet ↗

This is the datasheet link the distributor returned with the part record. We pass it through as they gave it, and we have not opened it - there are more than 300,000 of these and we verify only the ones we curate by hand. If it does not resolve, that is the distributor’s record, not the part.

What does ISL6721AB cost landed in Malaysia?

Malaysia · DDP · HS ▾
Goods
Freight · express 2 d
Import duty · 0 % (ITA-exempt)
Sales & service tax · 6 %
Customs clearance
Landed total

Estimate only. The correct HS classification for your import is your responsibility - see terms of service.

Is there a CAD symbol and footprint for ISL6721AB?

4 downloads▾
SCHEMATIC SYMBOL · .libPCB FOOTPRINT · .kicad_mod 3D MODEL · .stepSPICE · .mod

What can I use instead of ISL6721AB?

3 in DC DC switching controllers▾
UCC3800N
Texas Instruments
Buck, Boost, Flyback, Forward Converter Regulator Po…
46,036
RM 8.85
MAX17597ATE+T
Analog Devices Inc./Maxim Integrated
Boost, Flyback Regulator Positive Output Step-Up, St…
46,057
RM 8.86
LM3478MM/NOPB
Texas Instruments
Boost, Flyback, SEPIC Regulator Positive Output Step…
46,710
RM 8.98

Nearest peers by price within the same category. Confirm the parameters before you substitute - these are not guaranteed drop-in replacements.

Which parts are similar to ISL6721AB?

8 parts▾
TL3843BDR-8LV5069JA-AHNCP81102MNTXGNCP81272TMNTXGLV5061V-TLM-HTPS53124RGERDAP024UC3842BD1R2

Common questions about ISL6721AB

7 questions▾
Is ISL6721AB in stock?
Yes. 20,501 units are in stock across 1 authorized distributor (DigiKey), as of the catalogue snapshot of 2026-09-25.
How much does ISL6721AB cost?
RM 8.8531 is the lowest unit price on this page, from DigiKey. Prices fall as quantity rises; the full price break ladder is in the quotes table. Figures come from the distributor API and are indicative, not a binding quote.
Who supplies ISL6721AB?
DigiKey. It is authorized, franchised distributor quoting through its own API. TracedParts carries no broker or open-market listings.
How old are these prices?
The catalogue is re-pulled from the distributors' APIs once a day, and the line under the Quotes heading says which pull the figures on this page came from. Prices and stock can move between pulls, so treat them as indicative and confirm on the distributor's site before you order.
Who quoted these prices?
Every row on the site comes from an authorized, franchised distributor through its own API: DigiKey, Mouser or element14. There are no broker or open-market listings on TracedParts. If a source ever changes, the row will say so.
Why do you show the source before the price?
Because who sold it decides what happens at incoming inspection, and a table sorted by price alone hides that. Rows are grouped by the distributor's status first and ordered by unit price inside the group.
Why are prices in ringgit?
Distributors quote in US dollars. TracedParts converts to MYR at a fixed reference rate that is printed on the page, not a live FX feed, so the ringgit figure is a sourcing estimate rather than the amount you will be billed.