
APEX MICROTECHNOLOGY CORPORATION TELEPHONE (520) 690-8600 FAX (520) 888-3329 ORDERS (520) 690-8601 EMAIL prodlit@apexmicrotech.com
FEATURES
LOW COST
WIDE COMMON MODE RANGE —
Includes negative supply
WIDE SUPPLY VOLTAGE RANGE
Single supply: 5V to 40V
Split supplies: ±2.5V to ±20V
HIGH EFFICIENCY — |Vs–1.4V| at 1.0A typ
HIGH OUTPUT CURRENT — 1.7A min
INTERNAL CURRENT LIMIT
LOW DISTORTION
APPLICATIONS
HALF & FULL BRIDGE MOTOR DRIVERS
AUDIO POWER AMPLIFIER
IDEAL FOR SINGLE SUPPLY SYSTEMS
5V — Peripherals
12V — Automotive
28V — Avionic
DESCRIPTION
The PA35 consists of a monolithic power op amp with a
unity gain buffer in a 7-pin TO220 package. The 7-pin TO220
at back heat tab allows for heat sinking with an electrically
insulating thermal washer. The tab of the 7-pin TO220 plastic
package is tied to -Vs.
Combining the power amp and the unity gain buffer in
a parallel connection yields a single 3.4A amplier. The
wide common mode input range includes the negative
rail, facilitating single supply applications. It is possible
to have a "ground based" input driving a single supply
amplier with ground acting as the "second" or "bottom"
supply of the amplier.
The Safe Operating Area (SOA) must be observed when
determining the effect of all limits for the PA35 power op
amp. Proper heat sinking is required for maximum reliability
and performance.
EXTERNAL CONNECTIONS
PA35
HTTP://WWW.APEXMICROTECH.COM
(800) 546-APEX
(800) 546-2739
MICROTECHNOLOGY
DUAL POWER OPERATIONAL AMPLIFIERS
PA35
12
3
4
5
6
7
A
B
-
+
OUT
AMP
A
-IN
AMP
A
+IN
AMP
A
IN
AMP
B
-VS
+VS
OUT
AMP
B
PARALLEL CONNECTION
yields a single 3.4A amplifier
R
I
R
F
R
S
R
S
.2
.1
F
1/2
PA35
1/2
PA35
A
B
1
.1
F
1
.2
VIN
VO
+V
S
–V
S
I
2I
I
LOAD
TYPICAL CIRCUIT
EQUIVALENT SCHEMATIC
– IN
+IN
– VS
OUT
+VS
SUB
CHANNEL A
CHANNEL B
NOTE: INTERNAL BONDING REPRESENTED BY DASHED LINE