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DSCs
User Manual
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NXP DSCs User Manual

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Small, efficient, and robust solutions for digital still cameras
NXP discretes for power management, interface, and general-purpose applications
NXP discretes for digital still cameras
Digital still cameras (DSCs) are demanding designs. They are portable, battery-powered systems, so they require components that extend battery life and require very little board space. They also need to deliver quality, reliable performance while supporting increasing levels of sophisticated functionality.
This brochure is just the beginning. To learn more about how NXP’s discretes can enhance performance of your next DSC design, go to www.nxp.com
Highlights of NXP’s discretes portfolio
} Medium-power low V } Low V } Small-signal MOSFETs (general switching, load switch) } General-purpose and digital (resistor-equipped) transistors } General-purpose switching and Zener diodes
(BISS) transistors (power management / charger / LCD backlight)
CEsat
(MEGA) Schottky rectifiers (e.g. 30 V, 1 A)
F
Generic DSC block diagram
CCD sensing, driver, clocks
AF shutter
Lens actuator motor
Lens zoom motor
Photoash
DC/DC Power distribution
Battery
management unit
Power
Embedded
processor
Microcontroller
Charger
Audio
USB
Memory cards
LED status light
Display
Power
management
Interfaces
General­purpose
switching
Power management
DC/DC conversion and power management
Today’s DSCs mainly use a power management unit (PMU) to handle DC power conversion. Switches are typically integrated into the PMU, but freewheeling diodes (Schottky diodes) are often used externally due to low power dissipation and process technology.
Power
management
Interfaces
General-
purpose
switching
V
in
CONTROLLER
bra007
V
PMEG series
out
} Typical spec: VR > 30 V, IF > 500 mA } Ultra-low forward voltage V } Small SMD packages
F
System notes
} DSC energy source: 3 or 6 V batteries
- Average standalone energy consumption: 2 W per flash / 500 mW per LCD view
} Power management system includes multiple DC/DC converters, supply line switches, and
control and status logic
- Different voltages required for image processor, microcontroller, memory (1.8 to 3.3 V), and for CCD image sensor and LCD display (+5, +6.5, +13.5, ±15, or ± 7.5 V)
} Uses power-sequencing circuit
Low VF (MEGA) Schottky rectiers
Package
Size (mm) 2.6 x 1.7 x 1.0 1.7 x 1.25 x 0.7 1.2 x 0.8 x 0.6 VR max (V) IF max (A) VF max (mV) @ IF max IR max (mA) @ VR max Optimization
30
40 3.0 540 0.1 low I
0.5 430 0.15 low V 500 0.5 low V
1.0 360 1.5 low V 520 0.05 low I 680 0.5 low V
F
F
F
R
F
R
SOD123W
PMEG3010ER
PMEG4030ER
SOD323F
(SC-90)
PMEG3005EJ
PMEG3010CEJ
SOD523
(SC-79)
PMEG3005EB
PMEG3010EB
Power distribution
M3D109
Load switch, supply-line switch
Small-signal bipolar transistors, digital (resistor-equipped) transistors, and MOSFETs (single and double)
Power
management
Interfaces
Load switch transistor (PNP or P-channel)
} V
> 12 V
CEO
General­purpose
switching
} IC > 0.5 A
Input
voltage
Control
input
} Low V } Either BJT with 0.7 V VBE turn-on voltage or low V
M1
Switched
R3
R1
R2
voltage
Tr1
brb416
Control transistor (NPN)
} V
CEO
} IC < 0.1 A } General-purpose small-signal or digital (resistor-equipped) transistor
and low R
CEsat
> 12 V
for high efficiency
DSon
MOSFET
GSth
General-purpose load switches and control transistors
Package SOT23
Size (mm) 2.9 x 1.3 x 1.0 2.0 x 1.25 x 0.95 1.6 x 1.2 x 0.55 1.6 x 0.8 x 0.77 V
(V) IC (A) R1 (kΩ) R2 (kΩ) NPN PNP P-Channel NPN PNP NPN/PNP NPN
CEO
Control transistors
45 0.1 - - BC847 BC857 BC847W BC857W 50 0.1 4.7 10 PDTC143XT PDTA143XT PDTC143XU PDTA143XU PEMD18
Load switches
20
40 1 - - PBSS4140U
0.15 - - 2PA1576R 2PC4617R
3.9 - - PMV65XP 1 - - PBSS5120T
SOT323 (SC-70) SOT666
SOT416
(SC-75)
Li-ion battery charger
DSC battery charging
} Usually takes place outside the camera } Charging sockets for cameras or external Li-ion battery charger
Medium-power standard bipolar and low V
} Reverse blocking function: no additional Schottky diode required } High and stable current gain: direct drive from a microcontroller } Low turn-on voltage: efficient at low-voltage portable applications } Low saturation-voltage drop: < 40 mV V
PNP medium power transistor
} V
> V
CEO
} IC max = 1 to 4 A } Linear controller requires good heat transfer
transistors
CEsat
at IC current of 1 A
CEsat
out
AC/DC,
including
charger
Medium-power transistors
Package SOT89
(SC-62)
Size (mm) 4.5 x 2.5 x 1.5 2.9 x 1.5 x 1.0 2.0 x 2.0 x 0.65
V
(V) IC (A)
CEO
1.0 BC869
20
5.0 PBSS5520X
40 4.0 PBSS302PD
60 5.0 PBSS5560PA
SOT457
(SC-74)
SOT1061
Interfaces
M3D088
Power
management
USB interface
Protection against ESD on D+, D- and V C
critical for high-speed data transfer (480 Mbits/sec)
line
BUS
PESD5V0X1BL (datalines)
} V } Low Cd ≤ 1 pF } Single line, bidirectional protection } SOD882
PESD12VS1UL (V
} V } Single line, unidirectional protection } SOD882
PRTR5V0U2F (datalines + V
} V } Low Cd ≤ 1 pF } Optimized routing, bidirectional protection } One device protects D-, D+ and V } Ultra-small SOT886 and SOT891 packages
RWM
RWM
RWM
≤ 5 V
≤ 12 V
≤ 5 V
Interfaces
General­purpose
switching
)
BUS
)
BUS
(5 V)
BUS
USB ESD protection diodes
Package
Size (mm) 1.45 x 1.0 x 0.5 1.0 x 0.6 x 0.5
Number of protected lines C
1
2 1 PRTR5V0U2F
line
SOT886 (XSON6) SOD882
(pF)
12 PESD12VS1UL 35 PESD5V0S1BL
Analog audio and memory card
Analog audio ESD protection diodes
Package
Size (mm) 2.9 x 1.3 x 1.0 1.0 x 0.6 x 0.5
Number of protected lines C
1 35 PESD5V0S2BT PESD5V0S1BL
(pF)
line
SOT23 SOD882
Eye diagram
Memory card ESD protection diodes
Package
Size (mm) 1.6 x 1.2 x 0.55
Number of protected lines C
2
(pF)
line
16 PESD5V0L4UW 12 PESD5V0V4UW
SOT665
General-purpose and switching devices
6 5 4
006aaa269
017aaa000
D
S
D
mbb076
Power
management
Motor control
Interfaces
Low VF (MEGA) Schottky rectifier in motor control circuit (freewheeling diode) } PMEG3020BER (low IR), PMEG3020ER (low VF)
PMEG3020BER
} 30 V / 2 A Schottky diode } low I
R
} SOD123W
Switching, audio line mute circuits, TV detect, etc.
} Small-signal MOSFETs: 2N7002, PMV65XP } Small-signal transistors: 2PC4617, BC8x7, PMBT390x, PEMxx-series } Digital (resistor-equipped) transistors: PDTA, PDTD, PEMxx series } Diodes: BAS516, BAV70, BZX series
Status LED
General-purpose, switching and digital (resistor-equipped) transistors (double or single configuration, various packages)
PDTx, PEM series
} NPN } IC ≤ 100 mA, V
≤ 45 V
CEO
} SOT23, SOT323, SOT363, SOT666
General­purpose
switching
LED
Photo flash unit
Input
Voltage
IN SW
CONTROLLER
47 k
FB
GND
brb417
HV Switching
D
VOUT XETube
Photoflash Cap
brb415
R1
TR1
TR2
R1
1
2 3
G
2N7002
} N-channel small-signal MOSFET, VDS ≤ 60 V } ESD, non-ESD protected } SOT23
Planned 400 V switching diodes
} SOD323 and SOD123
Flash
Control
Xe Tube
HV Switching
D
U1
IGBT
brb414
G
S
NXP is a proven high-volume commodity supplier with a wide package range
and over 50 years experience in semiconductors.
Discretes for digital still cameras
Diodes
Schottky diodes Switching diodes Zener diodes Protection diodes
Charger
Zoom / lens
USB interface
Peripherals
Display PMEG3002AEL SOD882
Flash dual series Schottky in Dev 400 V - 800 V in Dev
Power
management /
load switch /
DC/DC
Transistors
Charger
Backlight /
LED status /
general-purpose
Power
management /
load switch /
DC/DC
PMEG3020ER SOD123W PTVS12VS1UR SOD123W PMEG2010EH SOD123F PMEG3020ER SOD123W PMEG4020ER SOD123W
BAT54 SOT23 BAV99 SOT23 1PS79SB30 SOD523(SC79) BAS516 SOD523(SC79) 1PS75SB45 SOT416(SC75) 1PS301 SOT323(SC70)
BAW56 SOT23
PMEG3005EJ SOD323F PZU7.5B SOD323F PMEG3010CEJ SOD323F PZU15B SOD323F PMEG3005EB SOD523 PMEG3010EB SOD523 PMEG3010ER SOD123W
General-purpose /
digital transistors /
Low V
PBSS302PD SOT457(SC74) PMV65XP SOT23 PBSS5220X SOT89(SC62) BC869 SOT89(SC62) PBSS5560PA SOT1061 PDTC1xxTT SOT23 PBLS15xxV PDTC1xxTU SOT323(SC70) PBLS-40xxV PDTA1xx1TT SOT23 PDTA1xxTU SOT323(SC70) 2PC4617R SOT416(SC75) BC847 SOT23 PDTC series all 3- and 6- pin PMV65XP SOT23 PBLS15xxV SOT666 PDTA series all 3- and 6- pin PMV50XP SOT457(SC74) PBLS-40xxV SOT666 PEMD18 / PEMZ1 SOT666 BSS84 SOT23 2PA1576R SOT323(SC70) BSH103 SOT23 2PC4617R SOT416(SC75) 2N7002 SOT23 BC8x7 SOT416(SC75) PMGD8000LN SOT363(SC88)
transistors
CEsat
MOSFETs
PRTR5V0U2F SOT886 PESD5V0S1BL SOD882 PESD12VS1UL SOD882
Small-scale integrated transistors
& diodes
Wide range of SMD packages
Medium-power
SOD128
Small
SOD123F
Very small
Ultra-small
Ultra-small
All sizes in mm
(length x width x height)
SOD323/ SC-76
SOD323F/ SC-90
SOD523/ SC-79
SOD882
SOD123W
1.2 x 0.8 x 0.6
1.0 x 0.6 x 0.5
3.8 x 2.6 x 1.0
SOD123F
2.6 x 1.6 x 1.1
SOD123W
2.6 x 1.7 x 1.0
SOD323
1.7 x 1.25 x 0.95
SOD323F
1.7 x 1.25 x 0.7
SOT23
SOT416/ SC-75
SOT883/ SC-101
2.9 x 1.3 x 1.0
2.0 x 1.25 x 0.95
1.6 x 0.8 x 0.77
1.0 x 0.6 x 0.5
SOT89/ SC-62
SOT1061/ HUSON3
SOT663
2.0 x 2.0 x 0.65
1.6 x 1.2 x 0.55
SOT143B
SOT353/SC-88A
SOT665
6.5 x 3.5 x 1.65
SOT223/ SC-73
2.9 x 1.3 x 1.0
SOT873/ HVSON8
SOT457/ SC-74
2.0 x 1.25 x 0.95
1.6 x 1.2 x 0.55
1.45 x 1.0 x 0.5
SOT886/ XSON6 SOT891/ XSON6
4/5/6-lead3-lead2-lead
3.3 x 3.3 x 0.85
2.9 x 1.5 x 1.0
2.0 x 1.25 x 0.95
1.6 x 1.2 x 0.55
SOT666
1.0 x 1.0 x 0.5
www.nxp.com
© 2010 NXP B.V. All rig hts re served. Rep roduction in whol e or in par t is prohibited without the prior wri tten c onsent of the copyright owner. The information pre sented in this d ocum ent does not form par t of any qu otati on or con trac t, is believed to be acc urate a nd relia ble and may be changed w ithout notice. No liab ilit y will be accepted by the publis her for any cons equence of it s use. Pu blica tion there of does not convey nor im ply any license under patent- o r other industria l or intellectual pro per ty rights.
Date of release: A pril 2 010 Document order num ber: 9397 750 168 89 Printed in the Nether lands
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