參數(shù)資料
型號(hào): SG3846J
廠商: MICROSEMI CORP-ANALOG MIXED SIGNAL GROUP
元件分類: 穩(wěn)壓器
英文描述: CURRENT MODE PWM CONTROLLER
中文描述: 0.5 A SWITCHING CONTROLLER, 500 kHz SWITCHING FREQ-MAX, CDIP16
封裝: HERMETIC SEALED, CERAMIC, DIP-16
文件頁數(shù): 4/10頁
文件大小: 210K
代理商: SG3846J
SG1846
4/90 Rev 1.1 2/94
Copyright
1994
L
IN
F
IN
ITY
Microelectronics Inc.
11861 Western Avenue
Garden Grove, CA 92841
(714) 898-8121
FAX: (714) 893-2570
4
ELECTRICAL CHARACTERISTICS
(continued)
Max. Min. Typ. Max.
Typ.
SG3846
Parameter
Test Conditions
Units
SG1846
SG2846
7.7
0.75
8.0
7.7
0.75
8.0
V
V
Note 4.These parameters although guaranteed over the recommended
operating conditions, are not tested in production.
Note 5.Parameter measured at trip point of latch with V
PIN 5
= V
REF
,
V
= 0V.
Note 6.Amplifier gain defined as : G =
; V
PIN 4
= 0V to 1.0V
Note 7.Current into Pin 1 guaranteed to latch circuit in shutdown state.
Note 8.Current into Pin 1 guaranteed not to latch circuit in shutdown
state.
Note 9.R
T
= 10K
, C
T
= 4.7nF
Min.
CHARACTERISTIC CURVES
FIGURE 1.
REFERENCE VOLTAGE VS. TEMPERATURE
FIGURE 2.
V
REF
SHORT CIRCUIT CURRENT VS. TEMPERATURE
FIGURE 3.
CURRENT SENSE THRESHOLD
VS. ERROR AMPLIFIER OUTPUT
FIGURE 4.
CURRENT SENSE GAIN VS. TEMPERATURE
FIGURE 5.
OSCILLATOR VALLEY VOLTAGE VS. TEMPERATURE
FIGURE 6.
OSCILLATOR PEAK VOLTAGE VS. TEMPERATURE
Under-Voltage Lockout Section
Start-Up Threshold
Threshold Hysteresis
Total Standby Current
Supply Current
17
21
17
21
mA
V
PIN 7
V
PIN 4
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