參數(shù)資料
型號(hào)： TQFN34-20
廠商： ANADIGICS, Inc.
英文描述： Four-Channel Backlight Driver with Dual LDOs
中文描述： 四通道雙LDO的背光驅(qū)動(dòng)器
文件頁(yè)數(shù)： 5/20頁(yè)
文件大?。?/td> 392K
代理商： TQFN34-20
AAT2847
Four-Channel Backlight Driver with Dual LDOs
2847.2007.09.1.0
5
Electrical Characteristics
1
V
IN
= 3.6V; C
IN
= C
LDOA
= C
LDOB
= 2.2μF; C
OUT
= 1μF; C1 = C2 = 1μF; T
A
= 25°C, unless otherwise noted.
Typical values are at T
A
= 25°C.
Symbol
LDOs: AAT2847-EE
Description
Conditions
Min
Typ
Max
Units
I
IN
IN Operating Current
V
ENA
= V
ENB
= V
IN
, V
EN/SET
= 0V, No Load
V
ENA
= V
IN
; V
ENB
= 0V; V
EN/SET
= 0V; No Load
I
LDO[A/B]
= 1mA to 200mA
I
LDO[A/B]
= 150mA
80
60
1.2
150
150
112
1.23
300
μA
V
FBA
, V
FBB
V
DO
Δ
V
OUT
/
V
OUT
*
Δ
V
IN
Feedback Voltage
Dropout Voltage
1.17
V
mV
Line Regulation
V
IN
= (V
LDO[A/B]
+ 1V) to 5V
0.09
%/V
PSRR
Power Supply Rejection
Ratio
I
LDO[A/B]
=10mA, 1kHz
50
dB
LDOs: AAT2847-QG
I
IN
IN Operating Current
V
ENA
= V
ENB
= V
IN
, V
EN/SET
= 0V, No Load
V
ENA
= V
IN
; V
ENB
= 0V; V
EN/SET
= 0V; No Load
80
60
2.8
1.5
150
150
112
2.884
1.545
300
μA
LDOA
LDOB
V
DO
Δ
V
LDO[A/B]
/
V
LDO[A/B]
*
Δ
V
IN
LDOA Voltage Tolerance I
LDOA
= 1mA to 150mA
LDOB Voltage Tolerance I
LDOB
= 1mA to 150mA
LDOA Dropout Voltage
2
LDOA, LDOB Line
Regulation
2.716
1.455
V
V
I
LDOA
= 150mA
V
IN
= (LDOA + 1V) to 5V; V
IN
= (LDOB + 1.2V)
to 5V
mV
0.09
%/V
PSRR
LDOA, LDOB Power
Supply Rejection Ratio
I
LDO[A/B]
=10mA, 1kHz
50
dB
LDOs: AAT2847-QI
I
IN
IN Operating Current
V
ENA
= V
ENB
= V
IN
, V
EN/SET
= 0V, No Load
V
ENA
= V
IN
; V
ENB
= 0V; V
EN/SET
= 0V; No Load
80
60
2.8
1.8
150
150
112
2.884
1.854
300
μA
LDOA
LDOB
V
DO
Δ
V
LDO[A/B]
/
V
LDO[A/B
]*
Δ
V
IN
LDOA Voltage Tolerance I
LDOA
= 1mA to 150mA
LDOB Voltage Tolerance I
LDOB
= 1mA to 150mA
LDOA Dropout Voltage
2
LDOA, LDOB Line
Regulation
LDOA, LDOB Power
Supply Rejection Ratio
LDO Logic Control – All Options
V
IL(ENA)
,
V
IL(ENB)
Low Threshold Voltage
V
IH(ENA)
,
V
IH(ENB)
High Threshold Voltage
ENA, ENB Input
Leakage
2.716
1.746
V
V
I
LDOA
= 150mA
mV
V
IN
= (LDO[A/B] + 1V) to 5V
0.09
%/V
PSRR
I
LDO[A/B]
=10mA, 1kHz
50
dB
ENA, ENB Input Logic
0.4
V
ENA, ENB Input Logic
1.4
V
I
EN[A/B]
V
EN[A/B]
= V
IN
= 5V
-1
1
μA
1. The AAT2847 is guaranteed to meet performance specifications over the –40C to +85°C operating temperature range is assured by
design, characterization and correlation with statistical process controls.
2. V
DO
is defined as V
IN
- LDOA when LDOA is 98% of nominal.
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