AAT2845AIML-EE-T1 AnalogicTech, AAT2845AIML-EE-T1 Datasheet - Page 4

• Manufacturer Part Number: AAT2845AIML-EE-T1
• Description: Four-Channel Backlight Driver with Dual LDOs
• Manufacturer: AnalogicTech

Electrical Characteristics
C
at T
1. The AAT2845A is guaranteed to meet performance specifications over the -40°C to +85°C operating temperature range and is assured
2. Current matching is defined as the deviation of any sink current from the average of all active channels.
4
Power Supply
Charge Pump
EN/SET Logic Control
IN
T
T
by design, characterization, and correlation with statistical process controls.
EN/SET HI MAX
T
EN/SET HI MIN
Symbol
= C
A
I
EN/SET LO
(D-Match)
I
I
EN/SET
= 25°C and V
T
T
F
T
SHDN
V
T
T
V
I
I
CC
CLK
HYS
OFF
DX
LAT
O1
SS
SD
TH
IN
= C
O2
= 2.2µF, C
Description
Supply Voltage
Total Shutdown Current at VIN
and LDOIN
Operating Current
Average Current Accuracy
Current Matching
1X to 1.5X or 1.5X to 2X Transition
Threshold at Any DX Pin
Soft-Start Time
Clock Frequency
Over-Temperature Shutdown
Threshold
Over-Temperature Shutdown
Hysteresis
EN/SET Low Time
Minimum EN/SET High Time
Maximum EN/SET High Time
EN/SET Off Timeout
EN/SET Latch Timeout
EN/SET Input Leakage
IN
= 3.6V.
1
= C
2
2
= 1.0µF, C
1
Four-Channel Backlight Driver with Dual LDOs
BP
= 0.1µF; T
Conditions
EN/SET = ENLDO = GND
1X Mode, 3.0 ≤ V
Active, No Load Current
1.5X Mode, 3.0 ≤ V
Active, No Load Current
2X Mode, 3.0 ≤ V
Active, No Load Current
50µA Setting, 1X Mode
20mA Setting, T
1mA Setting, T
V
20mA Setting, T
V
IN
EN/SET
- V
F
= V
= 1.5V
A
= 25°C, unless otherwise noted. Typical values are
IN
= 5V
A
A
A
= 25°C
IN
IN
= 25°C
= 25°C
IN
≤ 5.5,
≤ 5.5,
≤ 5.5,
Min
2.7
0.9
0.3
18
-1
Typ
150
100
140
1.0
0.5
AAT2845A
50
20
15
50
1
Max Units
2845A.2007.05.1.0
500
500
5.5
1.0
1.0
3.0
5.0
1.1
1.0
22
75
75
1
MHz
mA
mA
mV
µA
µA
µA
µs
°C
°C
µs
ns
µs
µs
µs
%
V