參數(shù)資料
型號(hào): TK73239MCLH
廠商: TOKO Inc.
英文描述: DIODE ZENER DUAL ISOLATED 200mW 15Vz 8.5mA-Izt 0.05 0.1uA-Ir 11 SOT-363 3K/REEL
中文描述: 低壓差穩(wěn)壓器
文件頁(yè)數(shù): 13/16頁(yè)
文件大?。?/td> 117K
代理商: TK73239MCLH
January 1999 TOKO, Inc.
Page 13
TK732xx
EXTERNAL PNP POWER TRANSISTOR
This IC can use any kind of external transistor. The external transistor selection is a function of the load current, H
fe
and
power dissipation. See following chart:
HIGH-SIDE SWITCHING
High-side switching should not be implemented by an external transistor as shown above. This results in additional
voltage drop and loss of accuracy.
The high output voltage accuracy and low dropout voltage are maintained when the IC is turned ON/OFF by using the
control pin as illustrated above.
LOAD CURRENT
RECOMMENDED EXTERNAL TRANSISTOR
RECOMMENDED R
IPK
(
)
0 ~ 180 mA
2SB624, 2SB1115, 2SB799 (NEC), 2SB970 (Matushita)
0.33 ~ 0.39
0 ~ 300 mA
2SB1115, 2SB799 (NEC)
0.22 ~ 0.27
0 ~ 500 mA
2SB1114, 2SB1115 (NEC), 2SB1302 (Sanyo), 2SA1203,
2SA1213, 2SA1734 (Toshiba)
0.12 ~ 0.15
0 ~ 1 A
2SA1242, 2SA1736 (Toshiba), 2SB1302, 2SA1896 (Sanyo)
0.056 ~ 0.068
0 ~ 2 A
2SA1451, 2SA1242 (Toshiba)
0.033 ~ 0.039
0 ~ 3 A
2SA1451 (Toshiba), 2SA1645 (NEC)
0.022 ~ 0.027
0 ~ 4 A
2SA1451 (Toshiba), 2SB904 (Sanyo), 2SA1645 (NEC)
0.012 ~ 0.015
APPLICATION INFORMATION (CONT.)
ON/OFF
VOUT
RVOLTAGE
VDROP
TK732xx
VOUT
VIN
VCONT
μ PRO
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