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参数资料
| 型号： | TL598MFKB |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 稳压器 |
| 英文描述： | 0.25 A SWITCHING CONTROLLER, 300 kHz SWITCHING FREQ-MAX, CQCC20 |
| 封装： | CERAMIC, LCC-20 |
| 文件页数： | 1/17页 |
| 文件大小： | 598K |
| 代理商： | TL598MFKB |
TL598
PULSEWIDTHMODULATION CONTROL CIRCUITS
SLVS053D FEBRUARY 1988 REVISED NOVEMBER 2003
1
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
D Complete PWM Power-Control Function
D Totem-Pole Outputs for 200-mA Sink or
Source Current
D Output Control Selects Parallel or
Push-Pull Operation
D Internal Circuitry Prohibits Double Pulse at
Either Output
D Variable Dead-Time Provides Control Over
Total Range
D Internal Regulator Provides a Stable 5-V
Reference Supply, Trimmed to 1%
Tolerance
D On-Board Output Current-Limiting
Protection
D Undervoltage Lockout for Low-VCC
Conditions
D Separate Power and Signal Grounds
description/ordering information
The TL598 incorporates all the functions required in the construction of pulse-width-modulated (PWM)
controlled systems on a single chip. Designed primarily for power-supply control, the TL598 provides the
systems engineer with the flexibility to tailor the power-supply control circuits to a specific application.
The TL598 contains two error amplifiers, an internal oscillator (externally adjustable), a dead-time control (DTC)
comparator, a pulse-steering flip-flop, a 5-V precision reference, undervoltage lockout control, and output
control circuits. Two totem-pole outputs provide exceptional rise- and fall-time performance for power FET
control. The outputs share a common source supply and common power ground terminals, which allow system
designers to eliminate errors caused by high current-induced voltage drops and common-mode noise.
The error amplifier has a common-mode voltage range of 0 V to VCC 2 V. The DTC comparator has a fixed
offset that prevents overlap of the outputs during push-pull operation. A synchronous multiple supply operation
can be achieved by connecting RT to the reference output and providing a sawtooth input to CT.
The TL598 device provides an output control function to select either push-pull or parallel operation. Circuit
architecture prevents either output from being pulsed twice during push-pull operation. The output frequency
for push-pull applications is one-half the oscillator frequency f
O +
1
2RTCT
. For single-ended applications:
f
O +
1
RT CT
.
ORDERING INFORMATION
TA
PACKAGE
ORDERABLE
PART NUMBER
TOP-SIDE
MARKING
PDIP (N)
Tube of 25
TL598CN
0
°C to 70°C
SOIC (D)
Tube of 40
TL598CD
TL598C
0 C to 70 C
SOIC (D)
Reel of 2500
TL598CDR
TL598C
Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are
available at www.ti.com/sc/package.
Copyright
2003, Texas Instruments Incorporated
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
1IN+
1IN
FEEDBACK
DTC
CT
RT
SIGNAL GND
OUT1
2IN+
2IN
REF
OUTPUT CTRL
VCC
VC
POWER GND
OUT2
D OR N PACKAGE
(TOP VIEW)
ERROR
AMP 1
ERROR
AMP 2
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相关代理商/技术参数 |
参数描述 |
|---|---|
| TL598MJB | 制造商:TI 制造商全称:Texas Instruments 功能描述:PULSE-WIDTH-MODULATION CONTROL CIRCUITS |
| TL598N | 制造商:TI 制造商全称:Texas Instruments 功能描述:PULSE-WIDTH-MODULATION CONTROL CIRCUITS |
| TL598QD | 制造商:TI 制造商全称:Texas Instruments 功能描述:PULSE-WIDTH-MODULATION CONTROL CIRCUITS |
| TL598QDR | 制造商:TI 制造商全称:Texas Instruments 功能描述:PULSE-WIDTH-MODULATION CONTROL CIRCUITS |
| TL598QN | 制造商:TI 制造商全称:Texas Instruments 功能描述:PULSE-WIDTH-MODULATION CONTROL CIRCUITS |
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