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PDF APL5934 Data sheet ( Hoja de datos )
| Número de pieza | APL5934 | |
| Descripción | Ultra Low Dropout Linear Regulator | |
| Fabricantes | ANPEC | |
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APL5934
3A, Ultra Low Dropout (0.23V Typical) Linear Regulator
Features
General Description
• Ultra Low Dropout
The APL5934 is a 3A ultra low dropout linear regulator.
- 0.23V(typical) at 3A Output Current
The IC needs two supply voltages, one is a control voltage
• Low ESR Output Capacitor (Multi-layer
(V ) for the control circuitry, the other is a main supply
CNTL
Chip Capacitors (MLCC)) Applicable
voltage (VIN) for power conversion, to reduce power dissi-
• 0.8V Reference Voltage
• High Output Accuracy
pation and provide extremely low dropout voltage.
The APL5934/B integrates many functions. A Power-On-
Reset (POR) circuit monitors both supply voltages on
- ±1.5% over Line, Load, and Temperature Range VCNTL and VIN pins to prevent erroneous operations.
• Fast Transient Response
The functions of thermal shutdown and current-limit pro-
• Adjustable Output Voltage
tect the device against thermal and current over-loads. A
• Power-On-Reset Monitoring on Both VCNTL and POK indicates the output voltage status with a delay time
VIN Pins
set internally. It can control other converter for power
• Internal Soft-Start
sequence. The APL5934/B can be enabled by other power
• Current-Limit and Short Current-Limit Protections systems. Pulling and holding the EN/ENB voltage below
• Thermal Shutdown with Hysteresis
• Open-Drain VOUT Voltage Indicator (POK)
0.4V shut/enable off the output.
The APL5934 is available in a SOP-8P package which
features small size as SOP-8 and an Exposed Pad to
• Low Shutdown Quiescent Current
reduce the junction-to-case resistance to extend power
• Shutdown/Enable Control Function
range of applications.
• Simple SOP-8P and TDFN3x3-10 Packages with
Exposed Pad
Applications
• Lead Free and Green Devices Available
(RoHS Compliant)
• Front Side Bus VTT (1.2V/3A)
• Note Book PC Applications
• Motherboard Applications
Simplified Application Circuit
VCNTL
VCNTL
POK
EN
Enable
VCNTL
POK VIN
VOUT
APL5934/C
EN FB
GND
VIN
VOUT
Optional
POK
ENB
Enable
VCNTL
POK VIN
VOUT
APL5934B/D
ENB
FB
GND
VIN
VOUT
Optional
ANPEC reserves the right to make changes to improve reliability or manufacturability without notice, and
advise customers to obtain the latest version of relevant information to verify before placing orders.
Copyright © ANPEC Electronics Corp.
Rev. A.1 - Mar., 2016
1
www.anpec.com.tw
1 page  
APL5934
Electrical Characteristics (Cont.)
Unless otherwise specified, these specifications apply over VCNTL=5V, VIN=1.8V, VOUT= 1.2V and TA= -40 ~ 85 oC. Typical values
are at TA=25oC.
S ymb ol
Param eter
Test Conditions
APL5 934
Min. Typ. Max.
Unit
OUTPUT V OLTAGE
V REF
Referen ce Vo ltag e
O utp ut Voltage Accu racy
Lo ad Regula tio n
Li ne Re gula tio n
VOUT Pu ll-low Re sistance
FB Input Cu rrent
DROPO UT VO LTAG E
V DROP V IN-to-VO UT Dropo ut Voltage
ILIM Curre nt-Limit Level
PR O TE CTI ON S
F B= VOU T
VCNTL=3.0 ~ 5.5V, IOUT= 0~3A,
TJ= -40~125 oC
IOUT=0A ~3A
IOUT=10mA, V CNTL= 3 .0 ~ 5.5V
VCNTL=5V , VEN= 0V, VOUT<0.8V
VFB=0 .8V
- 0.8 -
V
-1 .5 - +1.5 %
-
- 0.15
-
-10 0
0 .06
-
85
-
0.25
+ 0 .1 5
-
100
%
%/V
Ω
nA
V OUT=2.5V
VC NTL =5. 0V,
I OUT = 3A
V OUT=1.8V
V OUT=1.2V
TJ=25 oC
TJ= -40 ~ 12 5oC
TJ=25 oC
- 0 .26 0.31
TJ=-40 ~12 5oC
-
- 0.42
TJ=25 oC
- 0 .24 0.29
TJ=-40 ~12 5oC
-
- 0.40
TJ=25 oC
- 0 .23 0.28
TJ=-40 ~12 5oC
-
- 0.38
4.7 5.7 6.7
4.2 -
-
V
A
ISH ORT
T SD
Short Cu rrent-Limit Level
Short Cu rrent-Limit Blankin g
Time
Ther mal Shutdown Temper ature
Ther mal Shutdown Hystere sis
VFB<0 .2V
From begin ning of so ft-start
TJ risin g
- 1.1
0.6 1.5
- 150
- 50
-
-
-
-
A
ms
oC
oC
ENABLE AND SOFT-START
V EN/VENB
EN Log ic High Thresho ld
Voltage
ENB L ogic Low Thre sh old
Voltage
EN/ENB Hystere sis
VEN rising o r V ENB ri sin g
0.5 0.8 1.1
- 0.1 -
V
V
EN/ENB Pu ll-High Curre nt
EN/ENB Pu ll-Low Curren t
EN=GND or ENB = G ND
EN=VCNTL or ENB = VCNTL
- 3 - µA
tSS S oft-Sta rt Interval
Turn On Dela y
PO WER-OK AND DELAY
VOUT=10 % to 90 %
From being e nabl ed to VOUT risi ng 1 0%
0.3 0.6 1.2
6 0 120 230
ms
µs
VTHPOK Rising PO K Th reshold Voltage
POK Th reshold Hystere sis
VFB r isin g
9 0 9 2 94
-8-
%
%
POK Pull -low Vol tag e
PO K sin ks 5mA
-
0 .25
0.4
V
POK Debou nce Interval
POK Delay Time
VFB<falli ng POK voltage thresho ld
From VFB =VTHPOK to r isin g edge of th e V POK
- 10 -
µs
1 2 4 ms
Copyright © ANPEC Electronics Corp.
Rev. A.1 - Mar., 2016
5
www.anpec.com.tw
5 Page 
APL5934
Block Diagram
APL5934
VCNTL
VCNTL
3µA
EN
0 .8V
POK
POK
Delay
Thermal
Shutdow n
Turn on
Delay
Enable
POR
Pow er - On -
Reset
(POR )
Control Logic
and
Soft -Start
Enable
VREF
0 .8V
Error Amplifier
PW OK
VR EF_ OK
92 %
VREF
C ur r ent- Lim it
Short Current -Limit
FB
VIN
VOUT
GND
APL5934C
VCNTL
Thermal
Shutdown
POR
Pow er - On -
Reset
(POR )
EN
3 µA
0.8 V
Turn on Enable
Delay
Control Logic
and
Soft -Start
POK
POK
Delay
Enable
VREF
0 .8V
PW OK
VR EF_ OK
92 %
VREF
Error Amplifier
C ur r ent- Lim it
Short Current -Limit
FB
VIN
VOUT
GND
Copyright © ANPEC Electronics Corp.
Rev. A.1 - Mar., 2016
11
www.anpec.com.tw
11 Page | ||
| Páginas | Total 24 Páginas | |
| PDF Descargar | [ Datasheet APL5934.PDF ] | |
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