Datasheet

LTC3260
6
3260fa
Typical perForMance characTerisTics
LDO
+
Load Transient
LDO
–
Load Transient
V
OUT
Transient (Burst Mode
Operation, MODE = H)
V
OUT
Transient
(MODE = Low to High)
LDO Rejection of V
OUT
RippleLDO
–
Load Regulation
(T
A
= 25°C, C
F LY
= 1µF, C
IN
= C
OUT
= C
LDO
+
= C
LDO
–
= 10µF unless otherwise noted)
ADJ
–
Pin Voltage vs Temperature
LDO
–
Dropout Voltage
vs Temperature LDO
–
Power Supply Rejection
TEMPERATURE (°C)
–50
ADJ
–
PIN VOLTAGE (V)
–1.200
–1.188
150
3260 G16
–1.212
–1.224
0
50
100
–25
25
75
125
–1.176
TEMPERATURE (°C)
–50
LDO
–
DROPOUT VOLTAGE (mV)
200
300
150
3260 G17
100
0
0
50
100
–25
25
75
125
400
V
OUT
= –12V
I
LDO
–
= 50mA
150
250
50
350
FREQUENCY (kHz)
20
LDO
–
SUPPLY REJECTION (dB)
40
60
10
30
50
0.1 10 100 1000
3260 G18
0
1
V
OUT
= –6.5V
V
LDO
–
= –5V
I
LDO
–
= –50mA
V
RIPPLE
= 50mV
RMS
C
LDO
–
= 10µF
I
LDO
–
(mA)
0.1
–1.2006
V
LDO
–
(V)
–1.1998
–1.1996
–1.1994
1 10 100
3260 G19
–1.2000
–1.2002
–1.2004
V
OUT
= –12V
UNITY GAIN
1µs/DIV
3260 G20
V
LDO
+
10mV/DIV
AC-COUPLED
V
LDO
–
10mV/DIV
AC-COUPLED
V
OUT
10mV/DIV
AC-COUPLED
V
IN
= 15V
V
LDO
+
= 12V
V
LDO
–
= –12V
f
OSC
= 500kHz
I
LDO
+
= 50mA
I
LDO
–
–50mA
V
LDO
+
10mV/DIV
AC-COUPLED
I
LDO
+
40µs/DIV
3260 G21
V
IN
= 12V
V
LDO
+
= 5V
20mA
2mA
V
LDO
–
10mV/DIV
AC-COUPLED
I
LDO
–
40µs/DIV
3260 G22
V
IN
= 12V
V
LDO
–
= –5V
REFER TO FIGURE 3
–2mA
–20mA
V
OUT
500mV/DIV
AC-COUPLED
I
OUT
–
2ms/DIV
3260 G23
V
IN
= 12V
f
OSC
= 500kHz
–5mA
–50mA
V
OUT
500mV/DIV
AC-COUPLED
2ms/DIV
3260 G24
V
IN
= 12V
f
OSC
= 500kHz
I
OUT
= –5mA
MODE