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LM3310 датащи(PDF) 6 Page - Texas Instruments

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номер детали LM3310
подробное описание детали  Step-Up PWM DC/DC Converter with Integrated Op-Amp and Gate Pulse Modulation Switch
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производитель  TI [Texas Instruments]
домашняя страница  http://www.ti.com
Logo TI - Texas Instruments

LM3310 датащи(HTML) 6 Page - Texas Instruments

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LM3310
SNVS341E – AUGUST 2005 – REVISED MAY 2013
www.ti.com
Electrical Characteristics
Specifications in standard type face are for TJ = 25°C and those with boldface type apply over the full Operating
Temperature Range ( TJ = −40°C to +125°C). Unless otherwise specified, VIN =2.5V and IL = 0A.
Parameter
Test Conditions
Min(1)
Typ(2)
Max(1)
Units
IQ
Quiescent Current
FB = 2V (Not Switching)
690
1100
µA
VSHDN = 0V
0.5
0.04
8.5
660kHz Switching
2.1
2.8
mA
1.28MHz Switching
3.1
4.0
VFB
Feedback Voltage
1.231
1.263
1.287
V
%VFB/ΔVIN
Feedback Voltage Line
2.5V
≤ VIN ≤ 7V
-0.26
0.089
0.42
%/V
Regulation
ICL
Switch Current Limit (3)
(4)
2.0
2.6
A
IB
FB Pin Bias Current (5)
27
160
nA
ISS
SS Pin Current
8.5
11
13.5
µA
VSS
SS Pin Voltage
1.20
1.24
1.28
V
VIN
Input Voltage Range
2.5
7
V
gm
Error Amp Transconductance
ΔI = 5µA
26
74
133
µmho
AV
Error Amp Voltage Gain
69
V/V
DMAX
Maximum Duty Cycle
fS = 660kHz
80
91
%
fS = 1.28MHz
80
89
fS
Switching Frequency
FREQ = Ground
440
660
760
kHz
FREQ = VIN
1.0
1.28
1.5
MHz
ISHDN
Shutdown Pin Current
VSHDN = 2.5V
8
13.5
µA
VSHDN = 0.3V
1
2
IL
Switch Leakage Current
VSW = 20V
0.03
5
µA
RDSON
Switch RDSON
ISW = 500mA
0.18
0.35
ThSHDN
SHDN Threshold
Output High, VIN = 2.5V to 7V
1.4
V
Output Low, VIN = 2.5V to 7V
0.4
UVP
Undervoltage Protection
On Threshold (Switch On)
2.5
2.4
V
Threshold
Off Threshold (Switch Off)
2.3
2.1
IFREQ
FREQ Pin Current
FREQ = VIN = 2.5V
2.7
13.5
µA
Operational Amplifier
VOS
Input Offset Voltage
Buffer configuration, VO =
5.7
15
mV
AVIN/2, no load
IB
Input Bias Current (POS Pin)
Buffer configuration, VO =
200
550
nA
AVIN/2, no load
(5)
VOUT Swing
Buffer, RL=2kΩ, VO min.
0.001
0.03
V
Buffer, RL=2kΩ, VO max.
7.9
7.97
AVIN
Supply Voltage
4
14
V
Is+
Supply Current
Buffer, VO = AVIN/2, No Load
1.5
7.8
mA
IOUT
Output Current
Source
90
138
195
mA
Sink
105
135
175
Gate Pulse Modulation
VFLK
VFLK Voltage Levels
Rising edge threshold
1.4
V
Falling edge threshold
0.4
(1)
All limits specified at room temperature (standard typeface) and at temperature extremes (bold typeface). All room temperature limits are
100% production tested. All limits at temperature extremes are specified via correlation using standard Statistical Quality Control (SQC)
methods. All limits are used to calculate Average Outgoing Quality Level (AOQL).
(2)
Typical numbers are at 25°C and represent the most likely norm.
(3)
Duty cycle affects current limit due to ramp generator.
(4)
Current limit at 0% duty cycle. See Typical Performance Characteristics section for Switch Current Limit vs. VIN
(5)
Bias current flows into pin.
6
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