TLC5970
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SBVS140 –MARCH 2010
SWITCHING CHARACTERISTICS
At VCC = 10 V to 36 V, TA = –40°C to +85°C, RIREF = 1 kΩ, and VLED = 5.0 V. Typical values at VCC = 24 V and TA = +25°C,
unless otherwise noted.
TLC5970
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
At SDTY, SDTZ, SCKY, or SCKZ pins. RLDIF = 2 × 51 Ω,
CLDIF = 50 pF, SDTA-SDTB = SCKA-SCKB = 20 MHz,
measured at 0.4 V differential point
tR0
tR1
tF0
15
ns
Rise time
(see Figure 10 and Figure 11)
At OUTn pins. DCn/BC = 7Fh, RLLED = 27 Ω, CLLED = 15 pF
(see Figure 12)
10
15
15
ns
ns
At SDTY, SDTZ, SCKY, or SCKZ pins. RLDIF = 2 × 51 Ω,
CLDIF = 50 pF, SDTA-SDTB = SCKA-SCKB = 20 MHz,
measured at 0.4 V differential point
Fall time
(see Figure 10 and Figure 11)
At OUTn pins. DCn/BC = 7Fh, RLLED = 27 Ω, CLLED = 15 pF
(see Figure 12)
tF1
10
30
50
30
19
19
20
11
31
35
60
90
55
33
33
30
30
60
ns
ns
ns
ns
ns
ns
ns
ns
ns
(SCKA-SCKB)↑ – (SDTY-SDTZ) , RLDIF = 2 × 51 Ω,
CLDIF = 50 pF, DSI mode = 2 (see Figure 10)
tD0
20
30
20
13
13
13
5
(SCKA-SCKB)↑ – (SDTY-SDTZ) , RLDIF = 2 × 51 Ω,
CLDIF = 50 pF, DSI mode = 1 (see Figure 10)
tD0A
tD0B
tD1
(SCKA-SCKB) ↓ – (SDTY-SDTZ) , RLDIF = 2 × 51 Ω,
CLDIF = 50 pF, DSI mode = 0 (see Figure 11)
(SCKA-SCKB)↑ – (SCKY-SCKZ)↑, RLDIF = 2 × 51 Ω,
CLDIF = 50 pF, DSI mode = 2 (see Figure 10)
(SCKA-SCKB)↑ – (SCKY-SCKZ)↑, RLDIF = 2 × 51 Ω,
CLDIF = 50 pF, DSI mode = 1 (see Figure 10)
tD1A
tD1B
Propagation delay time
(SCKA-SCKB)↑↓ – (SCKY-SCKZ)↑↓, RLDIF = 2 × 51 Ω,
CLDIF = 50 pF, DSI mode = 0 (see Figure 11)
(SCKY-SCKZ)↑ – (SDTY-SDTZ), RLDIF = 2 × 51 Ω,
CLDIF = 50 pF, DSI mode = 2
(1)
tD2
(SCKY-SCKZ)↑ – (SDTY-SDTZ), RLDIF = 2 × 51 Ω,
CLDIF = 50 pF, DSI mode = 1
(1)
tD2A
15
tD3
tD4
tD5
(SCKA-SCKB) ↑ – OUT0 turns on/off (see Figure 12)
(SCKA-SCKB) ↑ – OUT1 turns on/off (see Figure 12)
(SCKA-SCKB) ↑ – OUT2 turns on/off (see Figure 12)
12
35
55
30
70
60
140
220
ns
ns
ns
110
Shift clock output
one pulse width
(SCKY-SCKZ)↑ – (SCKY-SCKZ) ↓ with DSI mode 1 or mode 2
(see Figure 10)
tW
12
25
35
ns
Shift clock output
pulse width error
High-level pulse width of (SCKA-SCKB) – high-level pulse
width of (SCKY-SCKZ) with DSI mode 0 (see Figure 11)
tW_ERR
fOSC
–10
8
10
12
ns
Internal oscillator frequency
10
MHz
MHz
High-side MOS switching
maximum frequency
fSW
At PH pin
1
1.25
1.5
tDTY0
tDTY1
tSCP
At PH pin. EEPROM data = 7h
At PH pin. EEPROM data = 0h
VFB < VSCP
83
15
86
18
90
21
%
%
On-duty cycle
Short-circuit detection time
2.4
4.0
µs
(1) The propagation delays are calculated by tD2 = tD0 – tD1, tD2A = tD0A – tD1A
.
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