MAX845ESA+T Maxim Integrated Products, MAX845ESA+T Datasheet - Page 4
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MAX845ESA+T
Manufacturer Part Number
MAX845ESA+T
Description
IC DRVR TRANSF ISO 8-SOIC
Manufacturer
Maxim Integrated Products
Datasheet
1.MAX845ESA.pdf
(16 pages)
Specifications of MAX845ESA+T
Applications
Transformer Driver, PCMCIA
Voltage - Input
3.3V, 5V
Number Of Outputs
1
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
8-SOIC (3.9mm Width)
Supply Voltage (max)
5 V
Supply Voltage (min)
3.3 V
Supply Current
1.1 mA
Maximum Power Dissipation
471 mW
Maximum Operating Temperature
+ 85 C
Mounting Style
SMD/SMT
Minimum Operating Temperature
- 40 C
Supply Voltage
5V
Digital Ic Case Style
SOIC
No. Of Pins
8
No. Of Regulated Outputs
2
Operating Temperature Range
-40°C To +85°C
Supply Voltage Range
2.5V To 6V
Termination Type
SMD
Rohs Compliant
Yes
Filter Terminals
SMD
Leaded Process Compatible
Yes
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Voltage - Output
-
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
Isolated Transformer Driver
for PCMCIA Applications
( Typical Operating Circuit , V
T
_____________________Pin Description
4
5V/div
A
____________________________Typical Operating Characteristics (continued)
PIN
1
2
3
4
5
6
7
8
= +25°C, unless otherwise noted.)
_______________________________________________________________________________________
NAME
GND1
GND2
N.C.
V
SD
D1
D2
FS
CC
SWITCHING WAVEFORMS
(TWO CYCLES)
Open Drain of N-Channel Transformer Drive 1
Ground. Connect both GND1 and GND2 to
ground.
Frequency Select (internal pull-up). If FS =
V
FS = 0V, switch frequency = 535kHz.
Shutdown. Ground for normal operation,
connect to V
No Connect. Not internally connected.
+5V Supply Voltage
Ground. Connect both GND1 and GND2 to
ground.
Open Drain of N-Channel Transformer Drive 2
CC
400ns/div
or open, switch frequency = 725kHz; if
IN
CC
= 5V, C1 = 0.1µF, C2 = C3 = 0.33µF, T1 = Halo TGM-010P3, CR1 = CR2 = MBR0520, FS = V
for shutdown.
FUNCTION
D1
D2
2V/div
TIME FROM SHUTDOWN TO POWER-UP
5 s/div
Figure 1. Test Circuit
V
5V
IN
FREQUENCY
ON / OFF
SELECT
500mV/div
SD
OUTPUT
C1
0.1µF
3
4
SD
FS
GND1
OF FIG. 1
CIRCUIT
MAX845
D2ON
D1OFF
2
SWITCHING WAVEFORM
(BREAK-BEFORE-MAKE)
V
CC
6
GND2
7
200ns/div
D1
D2
1
8
50
D2OFF
D1ON
R1
50
R2
CC
,