AAT2869 Advanced Analogic Technologies, Inc., AAT2869 Datasheet - Page 4

• Manufacturer Part Number: AAT2869
• Description: Fade-in/fade-out 4 Channel Backlight Driver With Dual Ldos
• Manufacturer: Advanced Analogic Technologies, Inc.

1. The AAT2869 is guaranteed to meet performance specifications over the -40°C to +85°C operating temperature range and is assuredby design, characterization, and correlation
2. Determined by the average of all active channels.
3. Current matching is defined as the deviation of any sink current from the average of all active channels.
4. The EN/SET pin must remain logic low (less than V
5. The EN/SET pin must remain logic high (greater than V
6. V
Electrical Characteristics
V
are T
4
SystemPower
Input Power Supply
Charge Pump Section
LED Current Sink Outputs
AS
Linear Regulators
Thermal
t
IN
t
I
V
ΔV
with statistical process controls.
Symbol
t
EN/SET(HI_MIN)
V
R
EN/SET(HIMAX)
t
t
OUT[A/B](MAX)
PSRR
V
V
I
I
V
EN/SET(LOW)
DO[A/B]
OUT[A/B](DO)
I
EN/SET(OFF)
EN/SET(LAT)
V
OUT
OUT_(DCHG)
SHDN(MAX)
V
∆V
DX(MATCH)
= 3.6V; C
V
OUT (max)
OUT(MAX)
EN/SET (L)
EN/SET (H)
2
OUT[A/B]
I
OUT[A/B]
T
IN_(TH)
Cwire Control and EN/SET Control
D_(TH)
V
T
f
t
I
A
I
LEAK
*∆V
osc
HYS
SS
DX
OUT
SD
cc
IN
= 25°C.
is defined as V
[A/B]
/
IN
/
Description
Input Voltage Range
Maximum Output Voltage
Operating Current
Shutdown Current
Maximum Output Current
Oscillator Frequency
Charge Pump Setup Time
Charge Pump Mode Hysteresis
I
Current Marching Between Any Two
Current Sinks
Charge Pump Mode Transition
EN/SET
EN/SET
EN/SET Input Leakage
EN/SET Input Low Time
EN/SET Minimum High Time
EN/SET Maximum High Time
EN/SET Input Off Timeout
EN/SET Latch Timeout
LDO
Tolerance
LDO
LDO
Line Regulation
LDO
Ratio
LDO
Resistance
T
T
IN
SINK
J
J
Thermal Shutdown Threshold
Thermal Shutdown Hysteresis
= 1μF; C
IN
A
A
A
A
A
Current Accuracy
, LDO
, LDO
, LDO
, LDO
, LDO
– LDO[A/B] when LDO[A/B] is 98% of nominal.
TM
B
B
B
B
B
6
Output Voltage
Maximum Load Current
Power Supply Rejection
Auto-Discharge
OUT
3
= 1μF; C
2
5
Fade-In/Fade-Out 4 Channel Backlight Driver with Dual LDOs
4
IL
FLY
) for the duration of longer than 500μs to guarantee the off timeout.
IH
= 1μF; C
1
) for the duration of longer than 500μs to guarantee the latch timeout.
w w w . a n a l o g i c t e c h . c o m
Conditions
1x Mode, No Load Current, CP enabled
1.5x Mode, I
V
EN = 0
V
1.5x to 1x Transition; I
Data 1, T
Data 32 only
V
1x to 1.5x Mode, I
I
I
V
V
I
FLT
OUT
OUT
OUT[A/B]
D4
F
F
OUT[A/B]
IN
; D1:D4 = 3.6V
= 3.6V
= IN
= (V
= 56nF; T
= 1mA to 150mA; T
= 1mA to 150mA; T
=10mA, 1kHz
≥ 3.0V; I
OUT[A/B]
A
= 25
D1
+ 1V) to 5V
A
= FS, excluding I
O
C
= -40°C to 85°C, unless otherwise noted. Typical values
OUT
D1
= 150mA
= I
D1
A
A
D2
= I
= -40°C to +85°C
= 25°C
= I
D2
D3
= I
= I
D1
D3
, V
D4
= I
D2
= 31mA
D4
= V
PRODUCT DATASHEET
= 31mA
D3
=
AAT2869
Min Typ Max Units
-3.0
200
2.7
-10
1.4
0.3
-5
-1
-2
0.09
±15
124
100
300
120
100
720
140
5.5
0.5
0.9
50
50
20
2
2869.2010.01.1.0
+10
250
500
500
150
5.5
1.0
0.4
3.0
+5
75
75
1
4
1
2
-
%/V
MHz
mA
mA
mV
mV
mA
mA
mV
dB
μA
μs
%
μs
ns
μs
μs
μs
%
%
O
O
Ω
V
V
V
V
C
C