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PDF L6610 Data sheet ( Hoja de datos )
| Número de pieza | L6610 | |
| Descripción | DIGITALLY PROGRAMMABLE SECONDARY HOUSEKEEPING CONTROLLER | |
| Fabricantes | STMicroelectronics | |
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Hay una vista previa y un enlace de descarga de L6610 (archivo pdf) en la parte inferior de esta página. Total 29 Páginas | ||
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L6610
DIGITALLY PROGRAMMABLE SECONDARY
HOUSEKEEPING CONTROLLER
s OV/UV DETECTION FOR 3.3V, ±5V, ±12V
RAILS AND 5V (OR 3.3V) AUX. VOLTAGE
s OC DETECTION ON 12V AND 5V (OR 3.3V)
RAILS
s AC MAINS UV (BROWNOUT) DETECTION
WITH HYSTERESIS
s ON-LINE DIGITAL TRIMMING FOR 5V/12V,
3.3V, 5V (OR 3.3V) AUX. FEEDBACK
REFERENCES AND AC MAINS UV.
s DIGITALLY SELECTABLE OPTIONS
s ERROR AMPLIFIERS FOR 5V/12V RAILS
(MAIN SUPPLY), 3V3 POST-REGULATOR
(MAG_AMP OR LINEAR) AND AUXILIARY
SUPPLY.
s MAIN SUPPLY ON/OFF CONTROL AND
POWER GOOD SIGNAL
s 50mA CROWBAR DRIVE FOR AUXILIARY
OUTPUT OVP.
s OPEN GROUND PROTECTION
s 8ms DIGITAL SOFT START
s 64 ms UV/OC BLANKING AT START-UP
TYPICAL APPLICATION CIRCUIT
WIDE RANGE
MAINS
+
-
MAIN
CONTROL
BCD TECHNOLOGY
SDIP24
SO24
ORDERING NUMBERS:
L6610N
L6610D
L6610DTR(T & Reel)
APPLICATIONS
s SWITCHING POWER SUPPLIES FOR
DESKTOP PC'S, SERVERS AND WEB
SERVERS
s SUPERVISOR FOR DISTRIBUTED POWER
+12V
+5V
COM
-5V
-12V
+3.3V
+5Vaux
April 2002
AUXILIARY
CONTROL
Bout
VDD
Dmon
Cout
MFault
12V
5V
-5V
-12V
3V3
Aout
Gnd
L6610
1/29
1 page  
L6610
PIN DESCRIPTION (continued)
Pin # Name
Description
17
-12V
-12V UV/OV monitor. If connected to a voltage greater than 1.5V (e.g. VREF, #16), the function
will be disabled.
18
-5V
-5V UV/OV monitor. If connected to a voltage greater than 1.5V (e.g. VREF, #16), the function will
be disabled.
Ground pin. The connection integrity of this pin is constantly monitored and in case of either a
19 GND bond wire or a PCB trace going open, MFAULT (#1) and DFAULT (#11) will be forced high
switching off the supply.
20 GND Ground pin. See above.
The chip has 2 operating modes, depending on PROG input pin biasing:
– normal mode: PROG should be floating or shorted to ground;
– programming mode: forcing PROG high (+5V), the chip enters programming mode. PW_OK
21
PROG
(#14) and PS_ON (#15) pins are disconnected from their normal functionality and they become
inputs for DATA and CLOCK allowing the chip to be programmed. The programming mode al-
lows selecting some options and adjusting some setpoints;
22 3V3 3V3 UV/OV monitor. It uses a separate reference to the feedback reference.
Input pin for 5V feedback, 5V current sense and 5V UV/OV monitor. 5V UV/OV uses a reference
23 5V separate from that used for feedback. This pin connects the 5V part of the Main error amplifier
feedback divider.
Input pin for 12V feedback, 12V current sense and 12V UV/OV monitor.12V UV/OV uses a
24 12V reference separate from that used for feedback. This pin connects the 12V part of the Main error
amplifier feedback divider.
FUNCTION DESCRIPTION
Name
Description
OVP
Whenever one of the Main output voltages is detected going above its own OVP threshold, this
function set MFAULT (#1) high latching the outputs off. The latch is released after cycling PS-ON
(#15) switch or by reducing Vdd (#12) below the UV threshold.
UVP
Whenever one of the Main output voltages is detected going under its own UVP threshold, this
function sets MFAULT (#1) high; if latch mode has been selected, this function will be latched.
Otherwise an attempt will be made to restart the device after 1 second delay. If ACsns (#13) is
low due to a brownout condition, UVP is disabled.
OCP
Whenever either the 5V (or 3V3, digitally selectable) or the 12V output experiences an
overcurrent condition, the OCP function will force MFAULT (#1) high. If latch mode has been
selected, this condition will be latched otherwise an attempt is made to restart the supply after a
wait of 1 second.
UVB
Undervoltage blanking. When either converter is enabled, the relevant UV/OC monitoring circuits
must not intervene to allow all outputs to come within tolerance. 64 ms timing is provided; for the
auxiliary converter the timing starts as the IC has a valid supply, for the main converter it starts
as the ACsns pin detects a valid input voltage for the converter.
PW-OK delay
PW-OK delay. After power-up, when the all of the monitored voltages are above their own UV
threshold the PW-OK pin (#14) will be kept low for additional 250ms (typ.) to make sure all the
outputs are settled.
OFF delay
Power-off delay. As soon as PS-ON (#15) pin is recognized high, indicating an imminent turn-off
condition, PW-OK (#14) pin will go low immediately . The converter will be turned off after a
delay of 2.5ms.
5/29
5 Page 
L6610
ELECTRICAL CHARACTERISTCS (continued)
(unless otherwise specified: TJ = 0 to 105°C; VDD = 5V, V3V3 = 3.3V, V5V = 5V, V-12V = -12V, V-5V = -5V,
VDmon = VDD, PS-ON = low)
Symbol
Parameter
Test Condition
Min. Typ. Max.
PSRR Power supply rejection ratio
4.5V<VDD<6V
60 70
IOUTL Output sink current
VFB = 1.4V, VOUT = 1.1V
258
IOUTH Output source current
VFB = 1.1V, VOUT = 4V
-1.0 -1.5 -2.0
VOUTH Output high level
VFB = 1.1V, ISOURCE = 1 mA
4 4.5
VOUTL Output low level
VFB = 1.4V, ISINK = 2 mA
0.7 1.1
VOUTL Output low level
Dmon = 2.7V, ISINK = 5 mA
0.25
PROGRAMMING FUNCTIONS
VPROGLO Prog Input Low
1.5
VPROGHI Prog Input High
3.5
RPROG Prog Pull Down
100
VCLOCKLO Clock Input Low
0.8
VCLOCKHI Clock Input High
2
FCLOCK Clock Frequency
0.8
VDATALO Data Input Low
1.5
VDATAHI Data Input High
2
IFUSE PROM Fuse Current
400
tFUSE PROM Fusing Time
3
Unit
dB
mA
mA
V
V
V
V
V
KΩ
V
V
MHz
V
V
mA
ms
11/29
11 Page | ||
| Páginas | Total 29 Páginas | |
| PDF Descargar | [ Datasheet L6610.PDF ] | |
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