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LD6815TD/30P,125

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P20
LD6815_SER All information provided in this document is subject to legal disclaimers. © NXP B.V. 2012. All rights reserved.
Product data sheet Rev. 2 — 14 December 2012 7 of 20
NXP Semiconductors
LD6815 series
Low dropout regulators, high PSRR, 150 mA
9. Dynamic behavior
9.1 Dropout voltage
The dropout voltage is defined as the smallest input to output voltage difference at a
specified load current when the regulator operates within its linear region. This means that
the input voltage is below the nominal output voltage value and the pass transistor works
as a plain resistor.
A small dropout voltage guarantees lower power consumption and efficiency
maximization.
V
IN
=V
O(nom)
0.15 V = 2.65 V;
C
L(ext)
=1F; C
ext(IN)
=1F
V
IN
=V
O(nom)
0.15 V = 3.45 V;
C
L(ext)
=1F; C
ext(IN)
=1F
Fig 4. LD6815TD/28x: Dropout voltage as a function
of output current
Fig 5. LD6815TD/36x: Dropout voltage as a function
of output current
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LD6815_SER All information provided in this document is subject to legal disclaimers. © NXP B.V. 2012. All rights reserved.
Product data sheet Rev. 2 — 14 December 2012 8 of 20
NXP Semiconductors
LD6815 series
Low dropout regulators, high PSRR, 150 mA
9.2 Output voltage variation (accuracy)
The LD6815 series guarantees high accuracy of the nominal output voltage.
V
IN
=2.2V;
C
L(ext)
=1F; C
ext(IN)
=1F
V
IN
=4.0V;
C
L(ext)
=1F; C
ext(IN)
=1F
Fig 6. LD6815TD/12x: Output voltage as a function of
output current
Fig 7. LD6815TD/28x: Output voltage as a function of
output current
V
IN
= 5.5 V; C
L(ext)
=1F; C
ext(IN)
=1F
Fig 8. LD6815TD/36x: Output voltage as a function of output current
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LD6815_SER All information provided in this document is subject to legal disclaimers. © NXP B.V. 2012. All rights reserved.
Product data sheet Rev. 2 — 14 December 2012 9 of 20
NXP Semiconductors
LD6815 series
Low dropout regulators, high PSRR, 150 mA
9.3 Power Supply Rejection Ratio (PSRR)
PSRR stands for the capability of the regulator to suppress unwanted signals on the input
voltage like noise or ripples.
for all frequencies
C
L(ext)
=1F; C
ext(IN)
=1FC
L(ext)
=1F; C
ext(IN)
=1F
Fig 9. PSRR for LD6815TD/18x Fig 10. PSRR for LD6815TD/25x
C
L(ext)
=1F; C
ext(IN)
=1F
Fig 11. PSRR for LD6815TD/31x
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P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P20

LD6815TD/30P,125

Mfr. #:
Buy LD6815TD/30P,125
Manufacturer:
NXP Semiconductors
Description:
IC REG LINEAR 3V 150MA 5TSOP
Lifecycle:
New from this manufacturer.
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