參數(shù)資料
型號(hào)： L6997D
廠商： STMICROELECTRONICS
元件分類： 穩(wěn)壓器
英文描述： SWITCHING CONTROLLER, PDSO20
封裝： MO-153AC, TSSOP-20
文件頁(yè)數(shù)： 12/30頁(yè)
文件大?。?/td> 591K
代理商： L6997D
Obsolete
Product(s)
- Obsolete
Product(s)
L6997
2/30
Table 2. Absolute Maximum Ratings
Table 3. Thermal Data
Figure 3. Pin Connection (Top View)
Symbol
Parameter
Value
Unit
VCC
VCC to GND
-0.3 to 6
V
VDR
VDR to GND
-0.3 to 6
V
HGATE and BOOT, to PHASE
-0.3 to 6
V
HGATE and BOOT, to PGND
-0.3 to 36
V
VPHASE
PHASE
-0.3-to 30
V
LGATE to PGND
-0.3 to VDR+0.3
V
ILIM, VFB, VSENSE, NOSKIP, SHDN, PGOOD, OVP, VREF, INT,
GNDSENSE to GND
-0.3 to VCC+0.3
V
Ptot
Power dissipation at Tamb = 25°C
1
W
Tstg
Storage temperature range
-40 to 150
°C
Symbol
Parameter
Value
Unit
Rth j-amb
Thermal Resistance Junction to Ambient
125
°C/W
Tj
Junction operating temperature range
-40 to 125
°C
Table 4. Pin Function
N°
Name
Description
1
NOSKIP
Connect to VCC to force continuous conduction mode and sink mode.
2
GNDSENSE
Remote ground sensing pin
3
INT
Integrator output. Short this pin to VFB pin and connect it via a capacitor to VOUT to insert the
integrator in the control loop. If the integrator is not used, short this pin to VREF.
4
VSENSE
This pin must be connected to the remote output voltage to detect overvoltage and
undervoltage conditions and to provide integrator feedback input.
5VCC
IC Supply Voltage.
6
GND
Signal ground
7
VREF
0.6V voltage reference. Connect a ceramic capacitor (max. 10nF) between this pin and
ground. This pin is capable to source or sink up to 250uA
GNDSENSE
INT
OVP
SHDN
ILIM
OSC
VCC
NOSKIP
PGOOD
LGATE
PGND
VDR
PHASE
HGATE
BOOT
1
3
2
4
5
6
7
8
9
18
17
16
15
14
13
19
20
10
SS
GND
11
12
VREF
VFB
TSSOP20
INT
VSENSE
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L6997S 功能描述:DC/DC 開(kāi)關(guān)控制器 STEP DOWN CONTROLLER Lo Vltg Operations RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開(kāi)關(guān)頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風(fēng)格: 封裝 / 箱體:CPAK
L6997STR 功能描述:DC/DC 開(kāi)關(guān)控制器 3.0 to 5.5V Step-Dwn RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開(kāi)關(guān)頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風(fēng)格: 封裝 / 箱體:CPAK
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L6998-1 制造商:Johanson Manufacturing 功能描述:TUNING ELEMENT
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