hc5549 Intersil Corporation, hc5549 Datasheet - Page 12

• Manufacturer Part Number: hc5549
• Description: Low Power Slic With Battery Switch
• Manufacturer: Intersil Corporation

Basic Application Circuit
Basic Application Circuit Component List
U1
RRT
RSH
RIL
RS
CRX, CRS, CTX, CRT,
CPOL, CFB
Design Parameters: Ring Trip Threshold = 90 mA peak., Switch Hook Threshold = 12 mA, Loop Current Limit = 24.6 mA, Synthesize Device
Impedance = 210kΩ/400= 525Ω, with 39Ω protection resistors, impedance across Tip and Ring terminals = 603Ω.
COMPONENT
RP2
RP1
HC5549
20kΩ
49.9kΩ
71.5kΩ
210kΩ
0.47µF
VALUE
12
-48V
PROTECTION
NETWORK
TOLERANCE
VCC
FIGURE 11. HC5549 BASIC APPLICATION CIRCUIT
20%
N/A
1%
1%
1%
1%
CPOL
CRT
RRT
RSH
CDC
RIL
CIL
CPS1
CPS2
CPS3
RATING
TIP
RING
SW+
SW-
RTD
RD
ILIM
CDC
POL
0.1W
0.1W
0.1W
0.1W
N/A
10V
VCC
AGND
HC5549
HC5549
VBL VBH
U1
n/a
CDC
CPS1
CPS2, CPS3
D1
RP1, RP2
BGND
BSEL
SWC
ALM
VRB
VRX
VFB
DET
COMPONENT
VTX
-IN
E0
F0
F1
F2
D1
RS
CRX
CTX
CFB
RB1
dependent and will be determined by protection
n/a
4.7µF
0.1µF
0.1µF
1N400X type with breakdown > 100V.
Protection resistor values are application
requirements. Standard applications will use ≥
35Ω per side.
VALUE
RB2
TOLERANCE
20%
20%
20%
n/a
RATING
>100V
100V
10V
n/a
FN4539.3