参数资料
型号: PTH08T231WAST
厂商: TEXAS INSTRUMENTS INC
元件分类: 电源模块
英文描述: 1-OUTPUT DC-DC REG PWR SUPPLY MODULE
封装: ROHS COMPLIANT PACKAGE-10
文件页数: 38/39页
文件大小: 1281K
代理商: PTH08T231WAST
SLTS265K – NOVEMBER 2005 – REVISED JUNE 2010
www.ti.com
ELECTRICAL CHARACTERISTICS (continued)
TA =25°C, VI = 5 V, VO = 3.3 V, CI = 330 F, CO1 = 200 F ceramic, and IO = IO max (unless otherwise stated)
PARAMETER
TEST CONDITIONS
PTH08T231W
MIN
TYP
MAX
UNIT
fSYNC
Synchronization (SYNC) frequency
240
400
kHz
VSYNCH
SYNC High-Level Input Voltage
2
5.5
V
SmartSync Control
VSYNCL
SYNC Low-Level Input Voltage
0.8
V
tSYNC
SYNC Minimum Pulse Width
200
nSec
CI
External input capacitance
300 (7)
F
without
Capacitance value
Ceramic
200 (8)
5000
F
TurboTrans
CO
External output capacitance
see table
Capacitance value
Ceramic
5000 (10)
mF
with
(9)
Turbotrans
Capacitance × ESR product (CO × ESR)
100
1000
mF×m
Per Telcordia SR-332, 50% stress,
MTBF
Reliability
6.7
106 Hr
TA = 40°C, ground benign
(7)
300 F of ceramic or 330 F of electrolytic input capacitance is required for proper operation. Electrolytic capacitance must be rated for
a minimum of 450 mA rms of ripple current. An additional 22-mF ceramic input capacitor is recommended to reduce rms ripple current.
(8)
200 F ceramic external output capacitance is required for basic operation. The required ceramic output capacitance can be made up of
2 × 100 F or 4 × 47 F. The minimum output capacitance requirement increases when TurboTrans (TT) technology is used. See the
Application Information for more guidance.
(9)
When using TurboTrans technology, a minimum value of output capacitance is required for proper operation. Additionally, low ESR
capacitors are required for proper operation. See the TurboTrans application notes for further guidance.
(10) This is the calaculated maximum when using the TurboTrans feature. Additionally, low ESR capacitors are required for proper operation.
See the TurboTrans application notes for further guidance.
8
Copyright 2005–2010, Texas Instruments Incorporated
Product Folder Link(s): PTH08T230W PTH08T231W
相关PDF资料
PDF描述
PTH08T230WAZT 1-OUTPUT DC-DC REG PWR SUPPLY MODULE
PTH08T230WAZ 1-OUTPUT DC-DC REG PWR SUPPLY MODULE
PTH08T231WAZ 1-OUTPUT DC-DC REG PWR SUPPLY MODULE
PTH08T230WAST 1-OUTPUT DC-DC REG PWR SUPPLY MODULE
PTH08T230WAS 1-OUTPUT DC-DC REG PWR SUPPLY MODULE
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