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MIC2569
CableCARDTM Power Switch
General Description
MIC2569 is designed to supply power to OpenCableTM systems and CableCARDTM hosts. These CableCARDs are also known as Point of Distribution (POD) cards. MIC2569 supports both Single and Multiple stream cards through a simple to control parallel interface. All voltage switching is soft-start at turn-on, and break-before-make when changing between different voltage supplies. Built in current limiting protects all VCC and VPP output lines of the host system from card faults and accidental short circuits. MIC2569 provides a FAULT/ signal to indicate an over-current or fault condition exists and is equipped with internal thermal monitoring circuitry to protect the device itself in the event of a sustained over-current condition. MIC2569 is offered in a space saving 16 pin QSOP packaging. Data sheets and support documentation can be found on Micrel's web site at www.micrel.com.
Features
* * * * * * * * * * * * * * * 110 m maximum VCC on resistance 400 m maximum VPP on resistance 3.0V to 3.6V for the 3.3VIN operating range 3.0V to 5.5V for the 5VIN operating range 1.3A minimum VCC current limit 150mA minimum VPP current limit (150mA each) Compact 16-pin QSOP packaging Operating temperatures from -40C to +85C Low quiescent current Soft start turn-on Break-before-make voltage switching Short-circuit protection with thermal shutdown Input under voltage lock-out (UVLO) ESD protection No external components required
Applications
* Satellite / Cable / DVR / Television set top boxes * Video recorders * Game consoles ___________________________________________________________________________________________________________
Typical Application
OpenCable Power Switch
CableCARD is a trademark of CableLabs, Inc. OpenCable is a trademark of Cable Television Laboratories, Inc. Micrel Inc. * 2180 Fortune Drive * San Jose, CA 95131 * USA * tel +1 (408) 944-0800 * fax + 1 (408) 474-1000 * http://www.micrel.com
September 2007
M9999-092507-C (408) 944-0800
Micrel, Inc.
MIC2569
Ordering Information
Part Number MIC2569YQS Marking MIC2569YQS Pb-Free Yes Junction Temp. (1) Range -40C to +85C Package 16-pin QSOP
Pin Configuration
16-Pin QSOP (QS)
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MIC2569
Pin Description
Pin Number 1 2 3 4 5 Pin Name GND NIC 3.3VIN 5VIN 3.3VIN Pin Function Ground. No internal connection. A voltage or signal applied to this pin will have no effect on device operation. 3V Supply input. Internal chip power is drawn from this supply. 5V Supply input. 3V Supply input. Note: both 3.3VIN inputs must be powered to insure rated current and RON is met. No internal connection. A voltage or signal applied to this pin will have no effect on device operation. Control Pins 7 C1 C2 0 0 8 C2 0 0 1 1 9 C0 1 1 10 11 12 13 14 15 16 FAULT/ NIC VPP2 VCC NIC VPP1 C1 0 0 1 1 0 0 1 1 C0 0 1 0 1 0 1 0 1 VCC 3.3 V 3.3 V Hi-Z Hi-Z 3.3 V 3.3V 3.3V GND Outputs VPP1 3.3 V 5.0 V Hi-Z GND GND 5V GND GND VPP2 3.3 V 5.0 V Hi-Z Hi-Z 5.0 V GND GND GND
6
NIC
FAULT/ indicates the occurrence of a fault. FAULT/ is an open drain LOW true output and goes low when any supply output is in current limit or if a thermal fault occurs. No internal connection. A voltage or signal applied to this pin will have no effect on device operation. VPP2 output to CableCARDTM card. VCC (3V main supply) output to CableCARDTM card. Both output pins should be connected together. No internal connection. A voltage or signal applied to this pin will have no effect on device operation. VPP1 output to CableCARDTM card.
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Absolute Maximum Ratings(1)
Power Supply Voltage 5VIN ........................................................-0.3V to +6.0V 3.3VIN .....................................................-0.3V to +3.8V Voltage on any other pin................................-0.3V to +6.0V Continuous Output Current: VCC ................................................................................. Internally limited VPP ......................................................Internally limited Current Into/Out of any control pin: .......................... 10mA Junction Temperature ................................................150C Storage Temperature .............................. -65C to +150C
Operating Ratings(2)
Power Supply Voltage 5VIN............................................................................................ 3.0V to 5.5V 3.3VIN ........................................................ 3.0V to 3.6V Continuous Output Current VCC ............................................................................................................. 3.3A VPP .................................................................. 450 mA Ambient Temperature (TA)...........................-40C to +85C Junction Temperature (TJ).........................-40C to +125C Thermal Resistance (JA).................................... 100.8C/W Soldering: QSOP Packages (3) Infrared (10 to 20 seconds)......................260C Peak
Electrical Characteristics(4)
3.3VIN = 3.3V; 5VIN = 5.0V; TA = 25C. Bold values indicate -40C TA +85C.
Symbol Parameter Condition Min Typ Max Units
3.3VIN 5VIN
Operating input voltage Operating input voltage S-Mode I3.3VIN Supply Input Current No Load C2,C1,C0 = 000 001 010 M-Mode 100 111 S-Mode I
5VIN
3.0 3.0
3.3 5.0 140 110 80 100 90 10 50 10 35 10
3.6 5.5 220 200 220 220 180 30 150 220 220 30 2.85 2.80
V V A A A A A A A A A A V V mV m m m A mA
IVIN Supply Input Current No Load C2,C1,C0 =
000 001 010 100 111 2.50 2.45
M-Mode
UVLO
UVLOHYS
Under Voltage Lock Out Hysteresis RON_VCC VCC Switch Resistance: RON_VPP1 VPP1 Switch Resistance: ILIMIT_VCC Output Current Limit: VCC ILIMIT_VPP1 Output Current Limit: VPP1
3.3VIN rising 3.3VIN falling
2.76 2.69 80
Power Switches
IOUT = 1000 mA IOUT = 125 mA VOUT = 3.3 V IOUT = 125 mA VOUT = 5.0 V VCC = 3.3 V VPP1 = 3.3 V and VPP1 = 5.0 V 1.3 150
80 275 275 2.3 300
110 400 400 3.3 450
RDS_ON
ILIMIT
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MIC2569
I/O Logic Symbol Parameter Condition Min Typ Max Units
VIL VIH I I
LOW-Level Input Voltage HIGH-Level Input Voltage Input Hysteresis Input leakage Current Output OFF leakage current Open Drain Output LOW Voltage C2, C1, C0 FAULT/, VFAULT/ = 5V FAULT/, I
SINK
1 2 100 -1 4 +1 10 0.2
V V mV A A V
IN_LGC OFF OL_OD
V
= 1 mA
AC Characteristics
The S-Mode and M-Mode AC Characteristics are not tested in production, specified by design.
Symbol Parameter Condition Min Typ Max Units
tD_FAULT/
Delay before asserting or deasserting FAULT/
Fault on VCC, VPP1, or VPP2
4
12
24
ms
S-Mode tPWRUP_S-MODE_VCC tPWRUP_S-MODE_VPP tON_000-001_VPP tR_000-001_VPP tOFF_001-000_VPP tF_001-000_VPP t t t t
OFF_001-110_VPP F_001-110_VPP ON_110-000_VPP R_110-000_VPP
Power-up Rise Time Output Turn On Delay Time Output Rise Time Output Turn-Off Delay Output Fall Time Output Discharge Delay Output Discharge Time Output Turn On Delay Time Output Rise Time
No Power to VIN Compliance Notes 5 & 6 000 to 001 Notes 8 & 9 001 to 000 Notes 8 & 10 001 to 110 Notes 8 & 10 110 to 000 Notes 8 & 9
750 800 800 800 35 25 35 25 100 800
s s s s s s s s s s
M-Mode
Symbol Parameter Condition Min Typ Max Units
t t t t
ON_011-100_VCC R_011-100_VCC ON_011-100_VPP R_011-100_VPP
Output Turn On Delay Time Output Rise Time Output Turn On Delay Time Output Rise Time Output Turn-Off Delay Output Fall Time Output Turn-Off Delay Output Fall Time
Notes 5 & 6 011 to 100 Notes 8 & 9 Notes 5 & 7 100 to 010 Notes 8 & 10
50 750 800 800 35 25 35 25
s s s s s s s s
tOFF_100-010_VCC tF_100-010_VCC tOFF_100-010_VPP tF_100-010_VPP
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MIC2569
Symbol
Parameter
Condition
Min
Typ
Max
Units
t t t t
OFF_100-111_VCC F_100-111_VCC OFF_100-111_VPP F_100-111_VPP
Output Discharge Delay Output Discharge Time Output Discharge Delay Output Discharge Time
Notes 5 & 7 100 to 111 Notes 8 & 10
35 25 35 25
s s s s
Notes: 1. Exceeding the absolute maximum rating may damage the device. 2. The device is not guaranteed to function outside its operating rating. 3. Devices are ESD sensitive. Handling precautions recommended. Human body model, 1.5k in series with 100pF. 4. Specification for packaged product only. 5. RL = 10, CL = 1F, See Figures 1, 2. 6. Maximum transition time to 3.3 V compliance, from any state including VCC equal to GND. 7. Maximum transition time to GND, from any state including VCC equal to 3.6 V. 8. RL = 100, CL = 0.1F, See Figures 1, 2 9. Maximum transition time to 5 V compliance, from any state including VPP equal to GND. 10. Maximum transition time to GND, from any state including VPP equal to 5.5 V.
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MIC2569
Timing Diagram
Figure 1. Turn-On and Turn-Off Delay
Figure 2. Rise and Fall Time
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MIC2569
Typical Characteristics
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Micrel, Inc.
MIC2569
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Micrel, Inc.
MIC2569
Functional Characteristics
MIC2569 Block Diagram
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Micrel, Inc.
MIC2569 controlled insuring a soft-start turn-on characteristic. Soft-starting is in effect anytime a supply ramps from a 0V condition or switches between voltages, as in the case of the VPP outputs. Thermal Shutdown Because electrical faults can cause significant heating in power switches, MIC2569 monitors its internal temperature and will shut down should the die temperature reach 140C. When the die temperature has dropped by about 10 degrees, MIC2569 will reactivate its outputs. If there is still a problem, the effected power switch will again get hot, shutting off all outputs. This power cycling action will continue as long as the fault persists. Once removed, MIC2569 will resume normal operation. FAULT/ FAULT/ is a LOW true open drain output which signals an over current or over-temp condition. As an open drain device, this output can be wire OR'd with other FAULT/ outputs to a single input pin on the host. For proper operation this output must be pulled-up to the logic supply rail by an external resistor. This resistor can be large in value, but not so large that leakage currents caused by surface contamination can cause a false indication of a fault condition. For this reason it is recommended that the pull-up resistor be 300k or less. FAULT/ is delayed with respect to an over current condition being detected. This is to prevent brief current spikes from triggering an interrupt to the system host. The delay is on the order of 12ms. Any fault lasting over 8 ms triggers the FAULT/ output. There is no delay for thermal faults. Any over-temp condition is reported immediately. UVLO (Under Voltage Lockout) An under-voltage lock out (UVLO) circuit monitors the 3.3VIN rail and keeps MIC2569 disabled until the input voltage reaches the minimum level needed for proper operation. Below this voltage the output switches are OFF and all functionality is disabled.
Functional Description
3.3VIN and 5.0VIN 3.3VIN and 5VIN are the input power supplies for the MIC2569. 3.3VIN powers the MIC2569's internal functions; as well as, VCC, and VPP1 and VPP2. 5VIN provides power to VPP1 and VPP2. Tables 1 and 2 shows the control states which supply is provided to which output C0, C1, C2 (States Controls) C0, C1, and C2 control the output conditions for VCC, VPP1 and VPP2. C0, C1, and C2 are inputs to the MIC2569 provided by the host. See Tables 1 and 2 for a complete listing. Also see the Application Information section. VCC VCC provides the main 3.3V supply to the CableCARD device. VCC is protected against high current conditions and short circuits. The minimum current limit is set to 1.3A from 3.3VIN. Breakbefore-make switching prevents crossed connections during state changes. The VCC output depends on the host / card combination. See Tables 1 and 2 for a complete listing. Also see the Application Information section. VPP1, VPP2 (VPP1/2) VPP1 and VPP2 provide the 3.3V and 5.0V supplies to the CableCARD device. VPP1 and VPP2 are protected against high current conditions and short circuits. The minimum current limit is set to a minimum of 150mA. Note: VPP1 and VPP2 are powered separately with each having a current limit of 150mA Break-before-make switching prevents crossed connections during state changes. The VPP1/2 output depends on the host / card combination. See Tables 1 and 2 for a complete listing. Also see the Application Information section. Soft-Start The VCC, VPP1 and VPP2 outputs are all slew rate
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Micrel, Inc.
MIC2569
System State State Power-up No Card Card Detect After ID CIS request Card removal No Card 000 000 000 000 001 000 000
S-Mode VCC 3.3V 3.3V 3.3V 3.3V 3.3V 3.3V 3.3V VPP1 3.3V 3.3V 3.3V 3.3V 5V 3.3V 3.3V VPP2 3.3V 3.3V 3.3V 3.3V 5V 3.3V 3.3V State 010 010 011 100 111 010
M-Mode VCC Hi-Z Hi-Z Hi-Z 3.3V GND Hi-Z VPP1 Hi-Z Hi-Z GND GND GND Hi-Z VPP2 Hi-Z Hi-Z Hi-Z 5V GND Hi-Z
Table 1 Output States for S and M type CableCARDTMs Control State 0 1 2 3 4 5 6 7 Control Pins C2 0 0 0 0 1 1 1 1 C1 0 0 1 1 0 0 1 1 C0 0 1 0 1 0 1 0 1 VCC 3.3V 3.3V Hi-Z Hi-Z 3.3V 3.3V 3.3V GND Outputs VPP1 3.3V 5V Hi-Z GND GND 5V GND GND VPP2 3.3V 5V Hi-Z Hi-Z 5V GND GND GND
Table 2 Output Control
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MIC2569 Figure 1 shows S-Mode power state diagram.
Application Information
CableCARDTM Operating Modes The OpenCable system has a host component (S-Host or M-Host) and a card component (S-Card or M-Card). The host / card combination determines which operational mode is used i.e. S-Mode or M-Mode. This in turn determines the appropriate state diagram. Table 3 below shows all of the combinations and operating modes.
S-Host S-Card M-Card S-Mode S-Mode M-Host S-Mode or No power M-Mode
Table 3 Operating Mode Combinations
An M-Host has the choice to accept or not accept an SCard. If the M-Host accepts the S-Card then the M-Host will initiate a change from M-Mode to S-Mode. Otherwise, the M-Host will not power-up the S-Card. S-Host After power-up, the S-Host remains in state 0 [000] unless one of two events occurs: 1. CIS Request - The CableCardTM may request that the Vpp outputs be provided with 5VIN, that is, enter state 1 [001]. It is the S-Host decision whether to provide the Vpp outputs with 5VIN. The S-Host has two possible options. a. If the S-Host refuses to provide 5VIN, then the S-Host does not change to state 1 [001] and will remain in state 0 [000], even upon card removal. See paragraph 2 below. b. If the S-Host grants 5VIN, then S-Host changes to state 1 [001]. The S-Host remains in state 1 [001] without returning. See paragraph 2 below. 2. Card removal - Upon card removal, the S-Host has two possible options: a. The S-Host changes directly to state 0 [000], regardless of the state at card was removed. b. The S-Host has the option to pass through state 6 [110] to remove any excessive voltage or charge on the Vpp outputs. The S-Host then returns to state 0 [000].
Figure 1 S-Host Power State Diagram
M-Host 1. Power-up - Upon power-up, M-Host two options: a. Move directly the state 2 [010] b. Pass through state 7 [111] to remove any excess voltage or charge, then move to state 2 [010] 2. No Card - M-Host will remain in state 2 [010] until card insertion. 3. Card Detection - If the M-Host detects that the inserted card is an M-card, then the M- Host will change to state 3 [011]. This informs the card that the host is an M-Host. 4. Card ID - The M-Host uses the card identification process to determine what type of card it is and what modes the card can operate in. There are three options: a. If the card is an M-Card, then the MHost will change to state 4 [100] and remain in state 4 [100] until card removal. b. If the card is an S-Card able to support CH1, then the M-Host will reset the card and power-up in S-Mode. The card will remain in S-Mode until card removal. c. If the card is not an M-Card, or an SCard not able to support Ch1, then power will not be provided to the card. The card will remain without power and not change state until card removal.
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Micrel, Inc. 5. Card removal - Upon card removal the M-Host will pass through state 7 [111] to remove any excessive voltage or charge on the Vcc and Vpp outputs. The M-Host then returns to state 2 [010]. Figure 2 below shows M-Mode power state diagram.
MIC2569
Figure 2 M-Host Power State Diagram
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MIC2569
Package Information
16-Pin QSOP (QS)
MICREL, INC. 2180 FORTUNE DRIVE SAN JOSE, CA 95131 USA
TEL +1 (408) 944-0800 FAX +1 (408) 474-1000 WEB http://www.micrel.com
The information furnished by Micrel in this data sheet is believed to be accurate and reliable. However, no responsibility is assumed by Micrel for its use. Micrel reserves the right to change circuitry and specifications at any time without notification to the customer. Micrel Products are not designed or authorized for use as components in life support appliances, devices or systems where malfunction of a product can reasonably be expected to result in personal injury. Life support devices or systems are devices or systems that (a) are intended for surgical implant into the body or (b) support or sustain life, and whose failure to perform can be reasonably expected to result in a significant injury to the user. A Purchaser's use or sale of Micrel Products for use in life support appliances, devices or systems is a Purchaser's own risk and Purchaser agrees to fully indemnify Micrel for any damages resulting from such use or sale. (c) 2007 Micrel, Incorporated.
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MIC2569
Revision History
Date Edits by: Revision Number
September 2007
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