LM25069PMME-1/NOPB National Semiconductor, LM25069PMME-1/NOPB Datasheet - Page 17
![IC CTLR POS HOTSWAP LATCH 10MSOP](/photos/6/60/66087/pkg_mub10a_sml.jpg)
LM25069PMME-1/NOPB
Manufacturer Part Number
LM25069PMME-1/NOPB
Description
IC CTLR POS HOTSWAP LATCH 10MSOP
Manufacturer
National Semiconductor
Type
Hot-Swap Controllerr
Datasheet
1.LM25069PMME-2NOPB.pdf
(22 pages)
Specifications of LM25069PMME-1/NOPB
Applications
General Purpose
Internal Switch(s)
No
Voltage - Supply
2.9 V ~ 17 V
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
Input Voltage
17V
Output Voltage
19.5V
Internal Switch
No
Rohs Compliant
Yes
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
LM25069PMME-1TR
The four resistor values are calculated as follows:
(V
(V
Option D: The OVLO function can be disabled by grounding
the OVLO pin. The UVLO thresholds are set as described in
Option B or Option C.
- Choose the upper and lower UVLO thresholds (V
UVL
-Choose the upper and lower OVLO threshold (V
OVL
FIGURE 12. Programming the Four Thresholds
).
).
FIGURE 13. UVLO = POR with Shutdown/Restart Control
OVH
UVH
) and
30086741
) and
17
As an example, assume the application requires the following
thresholds: V
14V. Therefore V
sistor values are:
R1 = 50 kΩ, R2 = 10 kΩ
R3 = 75 kΩ, R4 = 6.07 kΩ
Where the R1-R4 resistor values are known, the threshold
voltages and hysteresis are calculated from the following:
Option C: The minimum UVLO level is obtained by connect-
ing the UVLO pin to VIN as shown in
on when the VIN voltage reaches the POR threshold (
The OVLO thresholds are set using R3, R4. Their values are
calculated using the procedure in Option B.
POWER GOOD PIN
During turn-on, the Power Good pin (PGD) is high until the
voltage at VIN increases above
low, remaining low as the VIN voltage increases. When the
voltage at OUT increases to within 1.3V of the SENSE pin
(V
DS
<1.3V), PGD switches high. PGD switches low if the
UVH
= 8V, V
UV(HYS)
V
V
UV(HYS)
OV(HYS)
UVL
= 1V, and V
= R1 x 20 µA
= R3 x 20 µA
= 7V, V
30086750
≊
1.6V. PGD then switches
Figure
OVH
OV(HYS)
= 15.5V, and V
13. Q1 is switched
= 1.5V. The re-
www.national.com
≊
2.6V).
OVL
=