SD46520 Datasheet, PDF (3/8 Pages) Silan Microelectronics Joint-stock – 400KHZ 2A STEP-DOWN DC-DC CONVERTER

SD46520
ELECTRICAL CHARACTERISTICS (Unless otherwise specified, VIN=12V, Tamb=25°C)
Characteristics
Feedback Voltage
Input Voltage
Upper Switch On
Resistance
Lower Switch On
Resistance
Upper Switch Leakage
Current Limit
Current Limit Gain.
Output Current to Comp Pin
Voltage
Error Amplifier Voltage Gain
Error Amplifier
Transconductance
Oscillator Frequency
Short Circuit Frequency
Maximum Duty Cycle
Minimum Duty Cycle
Enable Threshold Voltage
Enable Pull-up Current
Under Voltage Lockout
Threshold Voltage
Under Voltage Lockout
Threshold Hysteresis
Voltage
Supply Current (Quiescent)
Supply Current (Operating)
Thermal Shutdown
Symbol
VFB
VIN
RONH
RONL
ILEAK
ILIM
GCS
Av
Gm
fs
fsshort
Dmax
Dmin
VEN
IENPUP
VUVLO
VUVLOH
IIN1
IIN2
TOT
Test Condition
4.75≤VIN≤18V
VCOMP<2V
VEN=0V; VSW=0V
ΔIC=±10μA
VFB=0V
VFB=1.0V
VFB=1.5V
ICC>100μA
VEN=0V
VEN≤0.4V
VEN≥2.6V;VFB=1.4V
Min.
1.220
4.75
--
Typ.
1.244
0.2
Max.
1.268
18
--
--
10
--
--
0
10
2.4
2.85
3.3
--
1.95
--
--
400
--
500
770
1100
360
400
440
46
58
70
--
90
--
--
--
5
0.7
1.0
1.3
1.5
2.5
3
2.37 2.495 2.62
--
210
--
--
23
36
--
3
3.5
--
180
--
Unit
V
V
Ω
Ω
μA
A
A/V
V/V
μΩ
KHz
KHz
%
%
V
μA
V
mV
μA
mA
°C
PIN CONFIGURATION
HANGZHOU SILAN MICROELECTRONICS CO.,LTD
Http://www.silan.com.cn
REV:1.0 2009.04.07
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