參數(shù)資料
型號(hào)： TL1466I
廠(chǎng)商： Texas Instruments, Inc.
英文描述： HIGH-SPEED/PRECISION SIX CHANNEL SWITCHING REGULATOR CONTROLLER
中文描述： HIGH-SPEED/PRECISION六通道開(kāi)關(guān)穩(wěn)壓控制器
文件頁(yè)數(shù)： 5/24頁(yè)
文件大?。?/td> 382K
代理商： TL1466I
SLVS262 FEBRUARY 2000
5
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
Terminal Functions (Continued)
TERMINAL
NAME
DESCRIPTION
NO.
MOS GATE1
43
N-Channel MOSFET gate drive for the synchronous rectification of channel 1. The ON duty cycle for this terminal
is determined by the resistor value connected to MOS DUTY (pin 24).
MOS GATE4
60
N-Channel MOSFET gate drive for the synchronous rectification of channel 4. The ON duty cycle for this terminal
is determined by the resistor value connected to MOS DUTY (pin 24).
NONINV INPUT5
15
Error amplifier noninverting input terminal (channel 6). By connecting resistor and capacitor to this terminal, soft
start function is accomplished increasing this terminal voltage slowly.
NONINV INPUT6
10
Error amplifier noninverting input terminal (channel 6). By connecting resistor and capacitor to this terminal, soft
start function is accomplished increasing this terminal voltage slowly.
OUTPUT1
46
Output terminal to drive base for external PNP transistor of channel 1.
OUTPUT2
50
Output terminal to drive base for external PNP transistor of channel 2.
OUTPUT3
56
Output terminal to drive base for external PNP transistor of channel 3.
OUTPUT4
57
Output terminal to drive base for external PNP transistor of channel 4.
OUTPUT5
64
Output terminal to drive base for external PNP transistor of channel 5.
OUTPUT6
4
Output terminal to drive base for external PNP transistor of channel 6.
OUTPUT BIAS1
41
Resistor connection to set output sink current for OUTPUT1 terminal (pin 46) of channel 1.
OUTPUT BIAS2
47
Resistor connection to set output sink current for OUTPUT2 terminal (pin 50) of channel 2.
OUTPUT BIAS3
52
Resistor connection to set output sink current for OUTPUT3 terminal (pin 56) of channel 3.
OUTPUT BIAS4
62
Resistor connection to set output sink current for OUTPUT4 terminal (pin 57) of channel 4.
OUTPUT BIAS5
3
Resistor connection to set output sink current for OUTPUT5 terminal (pin 64) of channel 5.
OUTPUT BIAS6
7
Resistor connection to set output sink current for OUTPUT6 terminal (pin 4) of channel 6.
OUTPUT GND1,2,3
53
Ground for channel 1, 2, and 3 output.
OUTPUT GND4,5,6
61
Ground for channel 4, 5, and 6 output.
OUTPUT VCC1,3
OUTPUT VCC2
OUTPUT VCC4,5,6
OVP5,6
42
Supply voltage for channel 1 and 3 outputs.
51
Supply voltage for channel 2 output.
63
Supply voltage for channel 4, 5, and 6 outputs.
8
Over-voltage threshold voltage setting for output regulation voltage of channel 5 and 6.
RT
21
Timing resistor connection for oscillation frequency setting.
SCP
23
Capacitor connection for short-circuit protection. When voltage across COMP terminal for each channel is
dropped below the specified threshold voltage, the capacitor connected between SCP and GND is charged by
the constant current source (2.5
μ
A Typ). If the voltage reaches to 1.5 V, the timer latch circuitry is set and all
channel outputs are forced to turn off.
SOFT START
26
Soft start operation for channel 1 to 4. By connecting a capacitor between this terminal connected internally to
error amplifier noninverting input for channel 1 to 4 and GND, soft start operation is enabled charging a capacitor
with the constant current source (3
μ
A Typ). Moreover, the same soft start operation is also enabled at the
standby release using STANDBY3 terminal only for channel 3.
STANDBY
30
ON/OFF common control input for all channels. The all channels output is turned off by adding low-level input
voltage (0.4 V Max) to this terminal, and the reference voltage is also shutdown.
STANDBY3
29
ON/OFF control input for channel 3. The channel 3 output is turned off by adding low-level input voltage (0.4
V Max) to this terminal.
VCC
VREF
28
Supply voltage
27
1.5 V reference voltage output
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