参数资料
| 型号： | MAX845EUA+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 4/16页 |
| 文件大小： | 0K |
| 描述： | IC DRVR TRANSF ISO 8-UMAX |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,500 |
| 应用： | 变压器驱动器，PCMCIA |
| 输入电压： | 3.3V，5V |
| 输出数： | 1 |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 8-TSSOP，8-MSOP（0.118"，3.00mm 宽） |
| 供应商设备封装： | 8-uMAX |
| 包装： | 带卷 (TR) |
Isolated Transformer Driver
for PCMCIA Applications
____________________________Typical Operating Characteristics (continued)
(Typical Operating Circuit, V IN = 5V, C1 = 0.1μF, C2 = C3 = 0.33μF, T1 = Halo TGM-010P3, CR1 = CR2 = MBR0520, FS = V CC ,
T A = +25°C, unless otherwise noted.)
SWITCHING WAVEFORMS
(TWO CYCLES)
SWITCHING WAVEFORM
(BREAK-BEFORE-MAKE)
D1OFF
D2OFF
5V/div
D1
500mV/div
D2
CIRCUIT
OF FIG. 1
D2ON
D1ON
400ns/div
TIME FROM SHUTDOWN TO POWER-UP
200ns/div
SD
2V/div
OUTPUT
5 μ s/div
_____________________Pin Description
V IN
PIN
NAME
FUNCTION
5V
C1
1
2
3
D1
GND1
FS
Open Drain of N-Channel Transformer Drive 1
Ground. Connect both GND1 and GND2 to
ground.
Frequency Select (internal pull-up). If FS =
V CC or open, switch frequency = 725kHz; if
FS = 0V, switch frequency = 535kHz.
0.1μF
4
ON / OFF
SD
6
V CC
MAX845
D1
R1
50 ?
1
R2
50 ?
4
5
SD
N.C.
Shutdown. Ground for normal operation,
connect to V CC for shutdown.
No Connect. Not internally connected.
FREQUENCY
SELECT
3
FS
GND1
GND2
D2
8
2
7
6
7
V CC
GND2
+5V Supply Voltage
Ground. Connect both GND1 and GND2 to
ground.
8
D2
Open Drain of N-Channel Transformer Drive 2
Figure 1. Test Circuit
4
_______________________________________________________________________________________
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