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L6910TR 数据表(PDF) 4 Page - STMicroelectronics

部件名 L6910TR
功能描述  ADJUSTABLE STEP DOWN CONTROLLER WITH SYNCHRONOUS RECTIFICATION
PDF  29 Pages
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制造商  STMICROELECTRONICS [STMicroelectronics]
网页  http://www.st.com
标志 STMICROELECTRONICS - STMicroelectronics

L6910TR 数据表(HTML) 4 Page - STMicroelectronics

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Table 5. Electrical Characteristics (Vcc = 12V, TJ =25°C unless otherwise specified)
Symbol
Parameter
Test Condition
Min
Typ
Max
Unit
Vcc SUPPLY CURRENT
Icc
Vcc Supply current
OSC = open; SS to GND
4
7
9
mA
POWER-ON
Turn-On Vcc threshold
VOCSET = 4V
4.0
4.3
4.6
V
Turn-Off Vcc threshold
VOCSET = 4V
3.8
4.1
4.4
V
Rising VOCSET threshold
1.24
1.4
V
Turn On EAREF threshold
VOCSET = 4V
650
750
mV
SOFT START AND INHIBIT
Iss
Soft start Current
S.S. current in INH condition
SS = 2V
SS = 0 to 0.4V
610
35
14
60
µA
µA
OSCILLATOR
fOSC
Initial Accuracy
OSC = OPEN
OSC = OPEN; Tj = 0
° to 125°
180
170
200
220
230
KHz
kHz
fOSC,RT
Total Accuracy
16 K
Ω < RT to GND < 200 KΩ
-15
15
%
∆Vosc
Ramp amplitude
1.9
V
REFERENCE
VOUT
Output Voltage Accuracy
VOUT = VFB; VEAREF = VREF
0.886
0.900
0.913
V
VREF
Reference Voltage
CREF = 1nF; IREF = 0 to 100
µA
0.886
0.900
0.913
V
VREF
Reference Voltage
CREF = 1nF; TJ = 0 to 125
°C-2
+2
%
ERROR AMPLIFIER
IEAREF
N.I. bias current
VEAREF = 3V
10
µA
EAREF Input Resistance
Vs. GND
300
k
Ω
IFB
I.I. bias current
VFB = 0V to 3V
0.01
0.5
µA
VCM
Common Mode Voltage
0.8
3
V
VCOMP
Output Voltage
0.5
4
V
GV
Open Loop Voltage Gain
70
85
dB
GBWP
Gain-Bandwidth Product
10
MHz
SR
Slew-Rate
COMP = 10pF
10
V/
µs
GATE DRIVERS
IHGATE
High Side
Source Current
VBOOT - VPHASE = 12V
VHGATE - VPHASE = 6V
11.3
A
RHGATE
High Side
Sink Resistance
VBOOT - VPHASE = 12V
2
4
Ω
ILGATE
Low Side Source Current
Vcc = 12V; VLGATE = 6V
0.9
1.1
A
RLGATE
Low Side Sink Resistance
Vcc = 12V
1.5
3
Ω
Output Driver Dead Time
PHASE connected to GND
90
210
ns
PROTECTIONS
IOCSET
OCSET Current Source
VOCSET = 4V
170
200
230
µA
Over Voltage Trip (VFB / VEAREF)VFB Rising
117
120
%
IOSC
OSC Sourcing Current
VFB > OVP Trip
15
30
mA
POWER GOOD
Upper Threshold (VFB / VEAREF)VFB Rising
108
110
112
%
Lower Threshold (VFB / VEAREF)VFB Falling
88
90
92
%
Hysteresis (VFB / VEAREF)
Upper and Lower threshold
2
%
VPGOOD
PGOOD Voltage Low
IPGOOD = -4mA
0.4
V
IPGOOD
Output Leakage Current
VPGOOD = 6V
0.2
1
µA



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