AAT1109 Datasheet, PDF (3/18 Pages) Advanced Analog Technology, Inc. – ONE-CHANNEL STEP-UP PWM CONTROLLER

Advanced Analog Technology, Inc.
AAT1109
ELECTRICAL CHARACTERISTICS, V_DD = 3.3V (UNLESS OTHERWISE
SPECIFIED) (SEE NOTE 1)
OSCILLATOR
PARAMETER
SYMBOL TEST CONDITION MIN TYP MAX UNIT
Oscillation Frequency
f _OSC
C_OSC =270pF
R _OSC = 4.2kΩ
400 500 600 kHz
Frequency Variation with
Temperature
f _∆T
T_C = −20^o C to
+ 85^o C
5
%
Frequency Input Stability
f_∆V V_DD = 2.6V to 6.5V
1
%
UNDER-VOLTAGE PROTECTION
PARAMETER
TEST CONDITION
Upper Threshold Voltage
V_UPH
T_C = 25^o C
Lower Threshold Voltage
V_UPL
T_C = 25^o C
Hysteresis ( ) V_UPH − V_UPL
V_HYS
T_C = 25^o C
Note 1: Typical values of all parameters are specified at T_C = 25^o C .
SHORT CIRCUIT PROTECTION CONTROL
PARAMETER
TEST CONDITION
Input Threshold Voltage
V_r1
Short-Circuit Detection
Threshold Voltage
V_{r 2}
Charging Current
I _SCP
V_SCP = 0V
MIN TYP MAX UNIT
2.12 2.47 2.85 V
1.96 2.28 2.63 V
0.19
V
MIN TYP MAX UNIT
1.160 1.262 1.360 _V
1.160 1.262 1.360 V
− 2.15 −1.50 −1.00 ^µA
SOFT-START
PARAMETER
Charging Current
Voltage at Soft-Start
Completion
TEST CONDITION MIN TYP MAX UNIT
I _CS
V_SCP = 0V
− 2.15 −1.50 −1.00 µA
V_ts
1.160 1.262 1.360 _V
SHUTDOWN CONTROL
PARAMETER
Shutdown Enable Voltage
V_SE
Shutdown Release Voltage
V_SR
TEST CONDITION
MIN TYP MAX UNIT
0.5 _V
2.0
V
–
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– Advanced Analog Technology, Inc. –
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