Regulators ICs for Digital Cameras and Camcorders
Strobe Charge Control IC
BD4222MUV
No.12036EAT05
●Description
The strobe charge IC is a self-oscillating switching regulator that uses a transformer. It provides highly efficient applications
for charging capacitors in sets with various strobes.
●Features
1) Built-in power transistor
2) Adjustable transformer primary-side peak current to linear current with the ADJ pin
3) Charging control switching with the START pin
4) Includes high precision full charge voltage detection circuit and output pin
5) Various built-in protective circuits (TSD, UVLO, SDP)
6) Built-in IGBT driver
7) Employs small package: VQFN016V3030 (3.0 mm×3.0 mm×1.0 mm)
●Applications
Digital still cameras, single-lens reflex cameras, digital video cameras
●Absolute
Maximum Ratings
Parameter
VCC supply voltage
VDD supply voltage
SW pin Voltage
VC pin voltage
Input pin voltage (START, ADJ)
Input pin voltage (IGBT_IN, IGBT_EN)
Operating temperature range
Storage temperature range
Junction temperature
Power dissipation
Symbol
VCC
VDD
VSW
VCDC
VI1
VI2
Topr
Tstg
Tjmax
Pd
Rating
-0.3 to 7
-0.3 to 7
50
-15 to 50
-0.3 to 7
-0.3 to 7
-35 to +85
-55 to +150
150
1770
*
Unit
V
V
V
V
V
V
°C
°C
°C
mW
* Reduced by 14.16 mW/°C at over Ta=25°C
(When mounted on a 74.2 mm×74.2 mm×1.6 mm glass epoxy board: Surface radiating copper foil of 6.28mm
2
, copper foil laminated in each layer)
Table 1 Absolute Maximum Ratings
●Operating
Conditions
Parameter
Symbol
VCC
VDD
Rating
2.5 to 5.5
2.5 to 5.5
45
4.5
0 to VCC
0 to VDD
Unit
V
V
V
A
V
V
VCC supply voltage range
VDD supply voltage range
SW pin
Voltage
Current *3
VSW
ISW
VI1
VI2
Input pin voltage (START, ADJ)
Input pin voltage (IGBT_IN, IGBT_EN)
*3 Pulse width: 100μs
Table 2 Operating Conditions
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1/21
2012.04 - Rev.A
BD4222MUV
Technical Note
●Electrical
characteristics
(Ta=25°C, VCC=V(START)=3.3V, V(ADJ)=1.0V,V(IGBT_IN)=0V, V(IGBT_EN)=0V, unless otherwise specified.)
Target value
Parameter
【Overall
device】
VCC current consumption
VCC Circuit current standby operation
VDD current consumption
VDD Circuit current standby operation
【Standby
control START pin】
START pin high voltage
START pin low voltage
START pin sink current
Unresponsive time when START shorted
【Transformer
primary-side driver block】
SW pin leak current
SW pin peak current 1
SW pin peak current 2
SW pin peak current 3
SW saturation voltage
【Charging
characteristics adjustment block】
ADJ sink current
Maximum ON time
Maximum OFF time
IADJ
TONMAX
TOFFMAX
－
25
12
5
50
25
10
100
50
μA
μs
μs
ISWL
IPEAK1
IPEAK2
IPEAK3
VSAT
－
0.9
1.5
3.05
－
－
1.0
1.6
3.20
0.10
1
1.1
1.7
3.35
0.20
μA
A
A
A
V
SW=45V
ADJ=0V
ADJ=1V
ADJ=3V
ISW=0.5A
VSTH
VSTL
ISTART
TSTART
2.0
－
12
6
－
－
24
12.5
－
0.6
36
25
V
V
μA
μs
START=3.3V
IVCC
ISTB
IVDD
IVDDSTB
－
－
20
－
1
－
40
－
2.5
1
80
1
mA
μA
μA
μA
At Output OFF
START=0V
IGBT_EN=3.3V,IGBT_IN=0V
IGBT_EN=0.0V,IGBT_IN=0V
Symbol
Min.
Standa
rd
Max.
Unit
Condition
【Transformer
secondary-side detection block】
VC pin sink current
Full charge detection voltage
OFF detection voltage
FULL pin ON resistance
FULL pin leak current
Anti-Ringing Filter time
【Protective
circuit block】
UVLO detection voltage
UVLO hysteresis width
UVLO VDD detection voltage
UVLO VDD hysteresis width
【IGBT
driver block】
High-level output short circuit current
Low-level output short circuit current
IGBT_IN high-level input voltage range1
IGBT_IN high-level input voltage range2
IGBT_IN low-level input voltage range
IGBT_IN sink current
IGBT_EN high-level input voltage range
IGBT_EN low-level input voltage range
IGBT_EN sink current
Ioso
Iosi
VIGBTH1
VIGBTH2
VIGBTL
IIGBT_IN
VIGBTENH
VIGBTENL
IIGBT_EN
90
30
2.0
1.4
－
12
2.0
－
4.5
140
60
－
－
－
24
－
－
6.5
200
90
－
－
0.6
36
－
0.6
10
mA
mA
V
V
V
μA
V
V
μA
IGBT_EN=3.3V, IGBT_IN=3.3V
IGBT_IN=3.3V, IGBT_EN=3.3V
START=0V,IGBT_OUT_P=0V
IGBT_IN=0V, IGBT_EN=3.3V
START=0V,IGBT_OUT_N=3.3V
IGBT_EN=3.3V, START=0V
VDD=3.0½3.6V,
Ta=-25½85 , IGBT_EN=3.3V
IGBT_EN=3.3V, START=0V
IGBT_IN=3.3V, START=0V
IGBT_IN=3.3V, START=0V
VUVLOTH
VUVLOHYS
VUVLODTH
VUVLODHYS
1.9
180
1.9
180
2.05
230
2.05
230
2.2
280
2.2
280
V
mV
V
mV
VDD detection IGBT_IN=3.3V,
IGBT_EN=3.3V
IGBT_IN=3.3V, IGBT_EN=3.3V
VCC detection
IVC
VFULLTH
VOFFL
RFULLL
IFULLH
TVCF
1
29.7
-1.3
50
－
100
2
30
-0.5
110
－
200
4
30.3
-0.2
300
1
320
mA
V
V
Ω
μA
nS
FULL=0.5V
FULL=3.3V
VC=30V
Table 3 Electrical Characteristics
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2/21
2012.04 - Rev.A
BD4222MUV
●Reference
data (VCC=3.3V, all the temperatures indicated in the graphs are the ambient temperature.)
1.0
1.0
0.8
0.8
3.0
2.5
2.0
Technical Note
1.6
1.4
1.2
85
℃
85
℃
25
℃
1.0
ICC [uA] [uA]
ICC
0.6
ICC [uA]
0.4
0.4
0.2
0.2
0.0
0.0
0
0
2
2
1.0
0.5
-35
℃
85
℃
4
25
℃
-35
℃
6
6
8
8
0.0
0
1
2
3
4
ICC [mA]
0.6
1.5
25
℃
0.8
0.6
0.4
0.2
0.0
0
1
2
3
4
5
-35
℃
VCC [V]
4
V(IPEAK)
［
V
½
[V]
V
（
ADJ
）
6
7
Fig1 Circuit current
VCC [V]
VCC during standby
operation
Fig.2 Circuit current VCC during Pow_MOS_ON
Fig.3 Circuit current VCC during Pow_MOS_OFF
VCC [V]
32
28
24
20
700
600
500
4.00
ADJ=3.0V
3.00
ADJ=1.6V
25
℃
85
℃
-35
℃
1.00
V(SW) [mV]
I(SW) [A]
400
300
200
100
0
ICC [uA]
16
12
8
4
0
-100
2.00
ADJ=0V
-50
0
50
100
150
200
0
0.2
0.4
0.6
0.8
1
0.00
-35
-15
5
25
45
65
85
V(IPEAK)
［
V
½
[V]
V
（
ADJ
）
I(SW) [A]
Ta [℃]
Fig.4 Temperature characteristics of full
charge voltage
Fig.5 SW pin saturation voltage
Fig.6. Temperature characteristics of
primary-side peak current
4.0
3.5
3.0
32
2.0
25
℃
-35
℃
85
℃
28
24
20
1.6
2.5
ISTART (uA)
I(SW) [A]
2.0
1.5
1.0
0.5
0.0
0
1
2
3
4
16
12
8
4
0
0
0.5
1
1.5
85
℃
-35
℃
ICC（ mA）
25
℃
1.2
25
℃
0.8
85
℃
-35
℃
0.4
2
2.5
3
3.5
0.0
0
0.5
1
1.5
2
2.5
3
3.5
V(ADJ) [V]
VSTART (V)
V(START) [V]
Fig.7 Primary-side peak current
characteristics
12
Fig.8 START pin sink current
Fig.9 START pin Vth voltage
32
28
24
20
30
25
-35
℃
25
℃
10
85
℃
25
℃
-35
℃
85
℃
85
℃
IADJ (uA)
8
25
℃
-35
℃
20
IIGBT_IN (uA)
I[FULL] (mA)
16
12
8
4
0
0
1
2
3
4
6
4
2
0
0
1
2
3
4
15
10
5
0
0
1
2
3
4
V[FULL] (V)
VADJ (V)
VIGBT_IN (V)
Fig.10 ADJ pin sink current
Fig.11 ADJ pin source current
Fig.12 ADJ pin sink current
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3/21
2012.04 - Rev.A
BD4222MUV
●Reference
data (VCC=3.3V, all the temperatures indicated in the graphs are the ambient temperature.)
4.0
7
4.0
3.5
Technical Note
85
℃
V[IGBT_OUT] (V)
3.0
6
5
85
℃
25
℃
V[IGBT_OUT] (V)
3.0
2.5
2.0
1.5
1.0
0.5
0.0
85
℃
I[IGBT_EN] (uA)
4
2.0
-35
℃
3
2
1
0
-35
℃
25
℃
25
℃
1.0
-35
℃
0.0
0
1
2
3
4
0
1
2
3
4
0
1
2
3
4
V[IGBT_IN] (V)
V[IGBT_EN ] (V)
V[IGBT_EN] (V)
Fig.13 IGBT_IN pin sink current
Fig.14 IGBT_IN pin Vth voltage
Fig.15 IGBT_EN pin sink current
70
60
50
0
3.2
2.8
2.4
2.0
-35
℃
25
℃
I[IGBT_OUTP] (mA)
-20
-40
-60
25
℃
85
℃
-35
℃
I[IGBT_OUTN] (mA)
40
30
20
10
0
0
1
2
3
85
℃
85
℃
-100
-120
-140
-160
SW (V)
-80
1.6
1.2
0.8
0.4
0.0
25
℃
-35
℃
4
V[IGBT_OUTN] (V)
0
1
2
3
4
0
1
2
3
4
V[IGBT_OUTP] (V)
VCC (V)
Fig.16 IGBT_EN pin Vth voltage
Fig.17 IGBT_OUT pin sink current
Fig.18 VCC UVLO Detect Voltage
3.2
2.8
2.4
2.0
3.2
3.2
2.8
2.4
85
℃
25
℃
-35
℃
IGBT_OUT (V)
2.8
2.4
2.0
1.6
1.2
0.8
0.4
0.0
SW (V)
1.6
1.2
0.8
0.4
0.0
0
1
2
3
4
85
℃
IGBT_OUT (V)
25
℃
-35
℃
2.0
1.6
1.2
0.8
0.4
0.0
25
℃
85
℃
-35
℃
0
1
2
3
4
0
1
2
3
4
VCC (V)
VDD (V)
VDD (V)
Fig.19 VCC UVLO release voltage
1.0
Fig.20 VDD UVLO Detect Voltage
160
140
Fig.21 VDD UVLO release voltage
1.6
1.4
1.2
0.8
120
0.6
100
85
℃
IVDD (mA)
1.0
0.8
85
℃
25
℃
IVDD (uA)
IDD [uA]
80
60
40
0.4
25
℃
-35
℃
0.6
0.4
0.2
0.0
-35
℃
0.2
-35
℃
25
℃
85
℃
20
0
0.0
0
2
4
6
8
0
2
4
6
8
0
2
4
6
8
VDD [V]
VDD (V)
VDD (V)
Fig.22 Circuit current VDD during standby
operation
Fig.23 Circuit current VDD during IGBT
driver off
Fig.24 Circuit current VDD during IGBT
driver on
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4/21
2012.04 - Rev.A
BD4222MUV
●Block
diagram
Technical Note
OFF time detection
*STB : Standby signal
*OS : One Shot palse
Fig.25 Block Diagram
●Pin
No.
Pin No.
1
2
3
4
5
6
7
8½10
11,12
13
14
15
16
Pin Name
VDD
VCC
GND
ADJ
FULL
START
VC
SW
PGND
IGBT_IN
IGBT_EN
IGBT_OUT_N
IGBT_OUT_P
Function
VDD supply pin
VCC supply pin
Ground pin
Ipeak current control signal input pin
Full charge detection signal output pin
Charge start signal input pin
Full charge detection pin
Switching pin
Power Ground
IGBT Driver output start signal input pin
IGBT Driver operation restriction input pin
IGBT Driver Nside output pin
IGBT Driver Pside output pin
Table 4 Pin No.
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2012.04 - Rev.A
嵌入式系统
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