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AP5100_1011 Datasheet, PDF (4/10 Pages) Diodes Incorporated – 1.2A Step-Down Converter with 1.4MHz Switching Frequency
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AP5100
1.2A Step-Down Converter with 1.4MHz Switching
Frequency
Absolute Maximum Ratings (Note 2)
Symbol
Description
ESD HBM Human Body Model ESD Protection
ESD MM
Machine Model ESD Protection
VIN
Supply Voltage
VSW
Switch Voltage
VBST
Boost Voltage
All Other Pins
TST
Storage Temperature
TJ
Junction Temperature
TL
Lead Temperature
θJA
Junction to Ambient Thermal Resistance (Note 3)
θJC
Junction to Case Thermal Resistance (Note 3)
Notes: 2. Exceeding these ratings may damage the device.
3. Test condition for SOT26: Measured on approximately 1” square of 1 oz copper.
Recommended Operating Conditions (Note 4)
Symbol
Description
VIN
Supply Voltage
TA
Operating Ambient Temperature Range
VOUT
Output Voltage
Note: 4. The device function is not guaranteed outside of the recommended operating conditions.
Rating
3
300
26
-0.3 to VIN + 0.3
VSW + 6
–0.3 to +6
-65 to +150
+150
+260
140
35
Rating
4.75 to 24
-25 to +85
0.81 to 15
Unit
KV
V
V
V
V
V
°C
°C
°C
°C/W
°C/W
Unit
°C
°C
V
Electrical Characteristics (VIN = 12V, TA = +25°C, unless otherwise noted)
Symbol
VFB
IFB
RDS(ON)
fSW
tON
Parameter
Feedback Voltage
Feedback Current
Switch-On Resistance (Note 5)
Switch Leakage
Current Limit (Note 5)
Oscillator Frequency
Fold-back Frequency
Maximum Duty Cycle
Minimum On-Time (Note 5)
Under Voltage Lockout Threshold
Rising
Under Voltage Lockout Threshold
Hysteresis
EN Input Low Voltage
EN Input High Voltage
EN Input Current
IS
Supply Current (Shutdown)
IQ
Supply Current (Quiescent)
Thermal Shutdown (Note 5)
Note: 5. Guaranteed by design.
Test Conditions
4.75V ≤ VIN ≤ 24V
VFB = 0.8V
VEN = 0V, VSW = 0V
VFB = 0.6V
VFB = 0V
VFB = 0.6V
VEN = 2V
VEN = 0V
VEN = 0V
VEN = 2V, VFB = 1V
Min
0.790
1.1
3.8
1.2
Typ.
0.810
0.1
0.35
2.4
1.4
480
87
100
4.0
150
0.3
0.1
0.1
0.4
140
Max
0.830
10
1.7
4.2
0.4
1.0
1.0
Unit
V
µA
Ω
µA
A
MHz
kHz
%
ns
V
mV
V
V
µA
µA
mA
°C
AP5100
Document number: DS32130 Rev. 2 - 2
4 of 10
www.diodes.com
November 2010
© Diodes Incorporated
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