AAT2689 Analogic Corporation, AAT2689 Datasheet - Page 4

• Manufacturer Part Number: AAT2689
• Manufacturer: Analogic Corporation

Electrical Characteristics
V
1. The AAT2689 is guaranteed to meet performance specifications over the –40°C to +85°C operating temperature range and is assured by design, characterization and correla-
4
4
SystemPower
SystemPower
Channel 1: Step-Down (Buck) Converter
(ΔV
(ΔV
Channel 2: 600mA Linear Low Dropout (LDO) Regulator
Over-Temperature, EN Logic
IN1
tion with statistical process controls.
Symbol
F
V
= 12.0V, V
V
OUT1
OUT1
R
T
FOLDBACK1
I
V
V
V
ΔI
EN1,EN2(L)
I
I
OUT2(TOL)
PSRR
ΔV
I
T
V
V
V
F
D
ON(MIN)
DSON(H)
EN1,EN2
V
V
V
V
SHDN1
SHDN2
LIMIT2
I
EN1(H)
EN2(H)
UVLO1
I
T
I
T
OSC1
SD1,2
OUT1
OUT1
OCP1
e
LX1
DO2
/V
/V
OUT1
MAX
IN1
FB1
Q1
IN2
Q2
S1
S2
N
IN1
OUT1
OUT1
) /
) /
TM
TM
IN2
Description
Input Voltage
UVLO Threshold
Output Voltage Range
Feedback Pin Voltage
Output Voltage Accuracy
Line Regulation
Load Regulation
Quiescent Current
Shutdown Current
Over-Current Offset Voltage
LX Pin Leakage Current
Maximum Duty Cycle
Minimum On-Time
Hi Side On-Resistance
Oscillator Frequency
Short Circuit Foldback Frequency
Start-Up Time
Input Voltage
Dropout Voltage
Quiescent (Ground) Current
Shutdown Current
Output Voltage Tolerance
Output Noise
Power Supply Rejection Ratio
Current Limit
Enable Start-Up Delay
Over-Temperature Shutdown
Threshold
Over-Temperature Shutdown
Hysteresis
Enable Threshold Low
Enable Threshold High
Enable Threshold High
Input Low Current
PMIC Solution for 12V Adapter Systems with 2-Output High Performance Step-Down Converters
PMIC Solution for 12V Adapter Systems with 2-Output High Performance Step-Down Converters
=3.3V; T
A
= -40°C to 85°C, unless noted otherwise. Typical values are at T
1
w w w . a n a l o g i c t e c h . c o m
w w w . a n a l o g i c t e c h . c o m
Conditions
V
V
V
I
V
I
V
I
V
V
V
V
V
V
Current Limit Triggered
From Enable Channel 1 to Output Regulation
98% x V
No load
V
I
T
I
T
BW = 300Hz to 50kHz
I
From Enable Channel 2 to Output Regulation
OUT1
OUT1
OUT1
OUT2
OUT2
OUT2
A
A
IN1
IN1
IN1
IN1
IN1
EN1
EN1
EN1
IN1
IN1
L1
EN2
= 25°C
= -40°C to 85°C
= 4.5V
Rising
Hysteresis
Falling
= 6V to 24V, V
= 6V to 24V, V
= 24.0V, V
= 6V to 24V
= High, No load
= Low, V
= High, V
= GND
= 0 to 2.5A
= 0V to 2.5A
= 0A to 2.5A
= 1 to 600mA, V
= 1 to 600mA, V
= 10mA
OUT2(NOM)
L1
IN1
EN1
= 0V
, I
= 6V to 24V, T
= Low
OUT2
OUT1
OUT1
IN2
IN2
= 600mA
= 3.3V,
= 3.3V,
= 2.7V to 5.5V,
= 2.7V to 5.5V,
A
= 25°C
10kHz
1MHz
1kHz
PRODUCT DATASHEET
PRODUCT DATASHEET
0.591
Min
-3.0
-1.0
-2.0
-3.5
-1.0
350
700
6.0
3.0
1.5
2.7
2.5
1.4
80
AAT2689
AAT2689
A
= 25°C.
0.600
0.014
1000
Typ
300
100
100
490
100
250
800
135
0.1
0.6
2.5
85
70
70
67
47
45
15
15
2689.2008.06.1.0
2689.2008.06.1.0
0.609
Max
+3.0
1300
+2.0
+3.5
24.0
35.0
120
650
125
5.0
5.5
1.0
5.5
1.0
0.6
1.0
Units
μV
%/V
%/A
kHz
kHz
mV
mA
mV
mΩ
mV
mA
μA
μA
ms
μA
μA
μA
dB
μs
°C
°C
%
%
ns
%
%
V
V
V
V
V
V
V
V
V
RMS