Datasheet LTC1540 (Analog Devices) - 10
| Manufacturer | Analog Devices |
| Description | Nanopower Comparator with Reference |
| Pages / Page | 14 / 10 — TYPICAL APPLICATIONS Low-Battery Detect. Figure 9. Low-Battery Detect … |
| File Format / Size | PDF / 209 Kb |
| Document Language | English |
TYPICAL APPLICATIONS Low-Battery Detect. Figure 9. Low-Battery Detect Works Down to 1.6V
Model Line for this Datasheet
- LTC1540CDD#PBF LTC1540CDD#PBF LTC1540CDD#TRPBF LTC1540CDD#TRPBF LTC1540CMS8#PBF LTC1540CMS8#PBF LTC1540CMS8#TRPBF LTC1540CMS8#TRPBF LTC1540CS8#PBF LTC1540CS8#PBF LTC1540CS8#TRPBF LTC1540CS8#TRPBF LTC1540IDD#PBF LTC1540IDD#PBF LTC1540IDD#TRPBF LTC1540IDD#TRPBF LTC1540IMS8#PBF LTC1540IMS8#PBF LTC1540IMS8#TRPBF LTC1540IMS8#TRPBF LTC1540IS8#PBF LTC1540IS8#PBF LTC1540IS8#TRPBF LTC1540IS8#TRPBF
Text Version of Document
LTC1540
TYPICAL APPLICATIONS Low-Battery Detect
Figure 9 shows how to use the LTC1540 for a low-battery down to a supply voltage of 2V, but it is still functional with detect, drawing only 1.4µA at VBAT = 2V. The circuit is pow- the supply as low as 1.6V. Some parameters, such as VREF ered by a 2-cell NiCd battery. The VBAT pin could be as low and VOS, will be degraded on lower supply voltages. The as 1.6V when the batteries are completely depleted. The input voltage range extends from 0.9V below the positive electrical specifications of the LTC1540 guarantee operation supply to the negative supply. VBAT = ~1.6V TO 2.5V 7 2-CELL R1 NiCd 3M V+ LTC1540 3 IN+ + R2 OUT 8 LBO 1.1M 4 IN– – 6 REF R3 40k 5 HYST R4 1.2M V– GND 2 1 R5 1M 1540 F09
Figure 9. Low-Battery Detect Works Down to 1.6V
1540fb 10 For more information www.linear.com/LTC1540
TYPICAL APPLICATIONS Low-Battery Detect
Figure 9 shows how to use the LTC1540 for a low-battery down to a supply voltage of 2V, but it is still functional with detect, drawing only 1.4µA at VBAT = 2V. The circuit is pow- the supply as low as 1.6V. Some parameters, such as VREF ered by a 2-cell NiCd battery. The VBAT pin could be as low and VOS, will be degraded on lower supply voltages. The as 1.6V when the batteries are completely depleted. The input voltage range extends from 0.9V below the positive electrical specifications of the LTC1540 guarantee operation supply to the negative supply. VBAT = ~1.6V TO 2.5V 7 2-CELL R1 NiCd 3M V+ LTC1540 3 IN+ + R2 OUT 8 LBO 1.1M 4 IN– – 6 REF R3 40k 5 HYST R4 1.2M V– GND 2 1 R5 1M 1540 F09
Figure 9. Low-Battery Detect Works Down to 1.6V
1540fb 10 For more information www.linear.com/LTC1540
