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PDF AZ494A Data sheet ( Hoja de datos )
| Número de pieza | AZ494A | |
| Descripción | PULSE-WIDTH-MODULATION CONTROL CIRCUITS | |
| Fabricantes | BCD Semiconductor | |
| Logotipo |  |
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PULSE-WIDTH-MODULATION CONTROL CIRCUITS
Product Brief
AZ494A/C
Description
Parametric Table
The AZ494A/C is a voltage mode pulse width modulation
switching regulator control circuit designed primarily for
power supply control. The AZ494A/C consists of a refer-
ence voltage circuit, two error amplifiers, an on-chip
adjustable oscillator, a dead-time control (DTC) compara-
tor, a pulse-steering control flip-flop, and an output con-
trol circuit. The precision of voltage reference (VREF) is
improved up to ± 1% through trimming and this provides
a better output voltage regulation. The AZ494A/C pro-
vides for push-pull or single-ended output operation,
which can be selected through the output control.
Reference Voltage (V)
AZ494A
AZ494C
Reference Voltage Tolerance
Frequency Change with Temperature (Max)
Open Loop Voltage Gain (db)
Unity-Gain Bandwidth (KHz)
Output Saturation Voltage (Common Emitter)
(V)
4.95
5
1%
1%
95
650
1.1
Features
Rise Time (ns)
Fall Time (ns)
100
25
· Stable 4.95V/5V Reference Voltage Trimmed to
Supply Voltage (V)
±1.0% Accuracy
· Uncommitted Output TR for 200mA Sink or Source
Package
Current
· Single-End or Push-Pull Operation Selected by Out-
put Control
· Internal Circuitry Prohibits Double Pulse at Eitherwww.DataSheet4U.com
Output
Benefits
· Complete PWM Control Circuit with Variable Duty
Cycle
· On-Chip Oscillator With Master or Slave Operation
· Higher Power Glitch Rejection
· Very competitive price
7 to 36
DIP-16
SOIC-16
Applications
· SMPS
· Back Light Inverter
· Charger
Additional Available Materials
· Samples
· Data Sheet
· Reliability Report
· ESD Report
· Application Notes
· Demo Board
Apr. 2006
BCD Semiconductor Manufacturing Limited
1 page | ||
| Páginas | Total 2 Páginas | |
| PDF Descargar | [ Datasheet AZ494A.PDF ] | |
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