SG1846 Microsemi Corporation, SG1846 Datasheet - Page 4

• Manufacturer Part Number: SG1846
• Description: CURRENT MODE PWM CONTROLLER
• Manufacturer: Microsemi Corporation

4/90 Rev 1.1 2/94
Copyright
Note 4. These parameters although guaranteed over the recommended
Note 5. Parameter measured at trip point of latch with V
Note 6. Amplifier gain defined as : G =
CHARACTERISTIC CURVES
ELECTRICAL CHARACTERISTICS
Under-Voltage Lockout Section
Start-Up Threshold
Threshold Hysteresis
Total Standby Current
Supply Current
FIGURE 1.
REFERENCE VOLTAGE VS. TEMPERATURE
FIGURE 4.
CURRENT SENSE GAIN VS. TEMPERATURE
1994
operating conditions, are not tested in production.
V
PIN 6
= 0V.
Parameter
V
V
PIN 7
PIN 4
(continued)
; V
PIN 4
FIGURE 2.
V
FIGURE 5.
OSCILLATOR VALLEY VOLTAGE VS. TEMPERATURE
REF
= 0V to 1.0V
PIN 5
SHORT CIRCUIT CURRENT VS. TEMPERATURE
= V
Test Conditions
REF
,
4
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
Note 9. R
state.
T
= 10K , C
Min.
T
= 4.7nF
FIGURE 3.
CURRENT SENSE THRESHOLD
VS. ERROR AMPLIFIER OUTPUT
FIGURE 6.
OSCILLATOR PEAK VOLTAGE VS. TEMPERATURE
SG1846
SG2846
Typ.
0.75
7.7
17
11861 Western Avenue
Max. Min. Typ. Max.
8.0
21
L
INFINITY Microelectronics Inc.
[phone]
SG3846
0.75
7.7
17
Garden Grove, CA 92841
SG1846
8.0
21
FAX: [phone]
Units
mA
V
V