1.5A Very L.D.O Voltage Regulator
Reference LM29152
LM29150/29151/29152
1.228
1.24
1.252
1.265
1.277
40
80
120
V
V
nA
ppm/℃
nA/℃
V
REF
Reference Voltage
(Note 8)
1.215
1.203
I
ADJ
Adjust Pin Bias Current
Reference Voltage Temp.
Coefficient
Adjust Pin Bias Current
Temp. Coefficient
(Note 7)
20
0.1
Enable Input LM29151 / LM29152
V
EN
Enable Input Voltage
Logic Low (Off)
Logic High (On)
V
EN
=26V
I
EN
Enable Pin Input Current
V
EN
=0.8V
Regulator Output Current
Shutdown
(Note 10)
10
500
2.4
100
600
750
2.5
5
0.8
V
μA
μA
μA
Note 1. Maximum positive supply voltage of 60V must be of limited duration (<100msec) and duty cycle(≤1%). The maximum continuous
supply voltage is 26V.
Note 2. Full load current (I
FL
) is defined as 1.5A.
Note 3. Dropout voltage is defined as the input-to-output differential when the output voltage drops to 99% of its nominal value with V
OUT
to V
IN
.
Note 4. V
IN
= V
OUT
(nominal) +1V. For example, use V
IN
= 4.3V for a 3.3V regulator or use 6V for a 5V regulator. Employ pulse-testing
procedures to minimize temperature rise.
Note 5. Ground pin current is the regulator quiescent current. The total current drawn from the source is the sum of the load current plus
the ground pin current.
Note 6. Output voltage temperature coefficient is defined as the worst case voltage change divided by the total temperature range.
Note 7. Thermal regulation is defined as the change in output voltage at a time T after a change in power dissipation is applied, excluding
load or line regulation effects. Specifications are for a 200mA load pulse at V
IN
= 20V (a 4W pulse) for T= 10ms.
Note 8. V
REF
≤
V
OUT
≤
(V
IN
-1V), 2.3V
≤
V
IN
≤
26V, 10mA < I
L
< I
FL
, T
J
＜
T
J
Max.
Note 9. Comparator thresholds are expressed in terms of a voltage differential at the Adjust terminal below the nominal reference voltage
measured at. 6V input. To express these thresholds in terms of output voltage change, multiply by the error amplifier gain = V
OUT
/
V
REF
= (R1 +R2)/R2. For example, at a programmed output voltage of 5V, the Error output is guaranteed to go low when the
output drops by 95mV x 5V/ 1.240V - 384mV. Thresholds remain constant as a percent of V
OUT
as V
OUT
is varied, with the dropout
warining occurring at typically 5% below nominal, 7.7% guaranteed.
Note 10. V
EN
≤
0.8V and V
IN
≤26V,
V
OUT
=0.
Note 11. When used in dual supply system where the regulator load is returned to a negative supply, the output voltage must be diode
clamped to ground.
Nov. 2009 - Rev. 1.2
-
7
-
HTC
HTC [ HTC KOREA TAEJIN TECHNOLOGY CO. ]
