MIC9130BQS(2005) Ver la hoja de datos (PDF) - Micrel
Número de pieza
componentes Descripción
fabricante
MIC9130BQS Datasheet PDF : 19 Pages
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MIC9130
Oscillator Frequency vs.
RC Values
1000000
47pF
100pF
100000 220pF
470pF
680pF
1000pF
10000 2200pF
Micrel, Inc.
101000000
100000 1000000 10000000
FREQUENCY (Hz)
*See applications section for higher
switching frequencies
Functional Block Diagram
FB
COMP OSC
SYNC
7
6
4
5
Oscillator
Error 1.2V
Amplifier
ISNS 14
40µA
VBIAS 9 5V
EN 10
RBIAS 3
BIAS
REG
0.82V
1.21V
5V
PWM
Peak
Current Limit
4µA
SS 12
CPWR 8
Max.
Duty Cycle
VCC 2
Q
R1
R2
S
LINE 1
2
5V
SR Latch
R
Q
S1
S2
MAXIMUM DUTY CYCLE
Current
Limit
Selection
VCC
UVLO
1-Shot
UNDERVOLTAGE LOCKOUT
M9999-040805
Thermal
Shutdown
13
UVLO
LINE
UVLO
Figure 1
8
VCC
16 OUT
15 PGND
11 AGND
April 2005
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