AAT2842INJ-EE-T1 Advanced Analog Technology, Inc., AAT2842INJ-EE-T1 Datasheet - Page 5

• Manufacturer Part Number: AAT2842INJ-EE-T1
• Description: High-Current Charge Pump with S2Cwire Control and Dual LDO for Backlight and Flash
• Manufacturer: Advanced Analog Technology, Inc.

Electrical Characteristics
V
otherwise noted. Typical values are at T
1. The AAT2842 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.
2842.2007.09.1.2
Charge Pump Section
Backlight LED Outputs, S
Backlight LED Outputs, S
Flash LED Outputs, S
IN
Symbol
V
T
I
I
I
by design, characterization, and correlation with statistical process controls.
I
V
V
V
BL _ (MAX)
BL _ (MAX)
IN(SHDN)
FL _ (MAX)
ΔI
ΔI
ΔI
V
V
IN(TH_H)
SD(HYS)
= 3.6V; C
I
BL_(TH)
BL_(TH)
FL_(TH)
f
I
T
IN(Q)
V
OUT
OSC
t
BSET
FSET
(BL _ )
(BL _ )
(FL _ )
SS
SD
IN
Description
IN Operating Voltage Range
IN Operating Current
IN Shutdown Current
Over-Temperature Shutdown
Threshold
Over-Temperature Shutdown
Hysteresis
OUT Maximum Output Current
Charge Pump Mode Hysteresis
Charge Pump Oscillator
Frequency
Charge Pump Soft-Start Delay
BL1-BL4 Maximum Current
BL1-BL4 Current Matching
BL1-BL4 Charge Pump Mode
Transition Threshold
R
BL1-BL4 Maximum Current
BL1-BL4 Current Matching
BL1-BL4 Charge Pump Mode
Transition Threshold
FL1-FL4 Maximum Current
FL1-FL4 Current Matching
FL1-FL4 Charge Pump Mode
Transition Threshold
R
IN
BSET
FSET
= 4.7µF; C
Pin Voltage
Pin Voltage
2
Cwire Data = 1
2
2
OUT
Cwire Data = 1
Cwire Data = 7
= 2.2µF; C
2
2
2
1
A
Control and Dual LDO for Backlight and Flash
1
= 25°C.
= C
Conditions
1X Mode, 3.0V ≤ V
Load; ENL = AGND, FENS = BENS = IN
1.5X Mode, 3.0V ≤ V
Load; ENL = AGND, FENS = BENS = IN
2X Mode, 3.0V ≤ V
Load; ENL = AGND, FENS = BENS = IN
R
ENL = BENS = FENS = AGND, T
Data 1
OUT = 0V to V
V
V
V
V
V
V
IN
IN
IN
IN
IN
IN
BSET
High-Current Charge Pump with S
2
= 1.0µF; R
- V
- V
- V
- V
- V
- V
= 280kΩ, Data 1, 1X Mode
F
F
F
F
F
F
= 1.5V
= 1.5V
= 1.5V
= 1.5V
= 1.5V
= 1.5V
BAT
BSET
IN
IN
= R
IN
≤ 5.5V, Active, No
≤ 5.5V, Active, No
≤ 5.5V, Active, No
FSET
= 280kΩ; T
A
= 25°C
A
Min Typ Max Units
135
2.7
8.6
= -40°C to +85°C, unless
27
140
600
350
350
150
150
300
0.7
0.5
0.7
9.6
50
15
30
60
2
1
AAT2842
10.6
165
5.5
1.0
3.0
5.0
5.0
2
33
1
2
4
Cwire™
MHz
mA
mA
mV
mA
mV
mA
mV
mA
mV
µA
µA
°C
°C
µs
%
%
%
V
V
V
5