IC-DC_17 Datasheet, PDF (8/19 Pages) IC-Haus GmbH – 2-CHANNEL BUCK/BOOST DC/DC CONVERTER

iC-DC
2-CHANNEL BUCK/BOOST DC/DC CONVERTER
Rev B1, Page 8/19
ELECTRICAL CHARACTERISTICS
Operating conditions: VB = +4 V to +36 V, RREF = 20 kΩ ±1 %, Tj = -40°C to +125°C, reference is GND (GNDA = GND),
unless otherwise stated.
Item Symbol Parameter
No.
Conditions
Unit
Min. Typ. Max.
203 Vt1()hys Hysteresis VBR
Vt1()hys = Vt1()hi − Vt1()lo
300 600
mV
204 Vt2()hi
Overvoltage Detection at VBR VBR increasing,
VBROK: open → lo
40.4 42
V
205 Vt2()lo
Reset Overvoltage Detection at VBR decreasing,
VBR
VBROK: lo → open
35 37.6
V
206 Vt2()hys Hysteresis VBR
Vt2()hys = Vt2()hi − Vt2()lo
1
2.8
4
V
210 Vs()lo
Saturation Voltage lo at VBROK I(VBROK) = 5 mA, VBROK = lo
0.4
V
211 Isc()lo
Short-Circuit Current lo in
VBROK
V(VBROK) = 2..8 V, VBROK = lo
50
mA
212 Ilk()
Leakage Current in VBROK
V(VBROK) = 0..8 V, VBROK = hi
-10
10
µA
213 V(VBR) Minimal Supply Voltage for
I(VBROK) = 5 mA, VBROK = lo,
3.3
V
VBROK Function
Vs(VBROK)lo < 0.4 V
Switching Regulator VH, VH1, VH2
305 V()
Voltage at VH
LVBH = 22 µH ±20 %, Ri(LVBH) < 1.1 Ω,
CVH = 1 µF;
VB ≤ 5 V, I(VH) = -50 mA,
VB > 5 V, I(VH) = -100 mA,
VB ≥ 12 V, I(VH) = -200 mA,
VB ≥ 24 V, I(VH) = -300 mA
7
7.75
8
V
7.25 7.75
8
V
7.25 7.75
8
V
7.25 7.75
8
V
307 CVH
Required Capacitor at VH
tolerance ±30 %
1
4.7
µF
308 RiVH
Permissible Internal Resistance
of Capacitor at VH
1
Ω
309 V()
Voltage at VH1
versus VCC1, CVH1 = 1 µF,
VB ≤ 5 V, I(VH1) = -50 mA,
VB > 5 V, I(VH1) = -100 mA,
VB ≥ 12 V, I(VH1) = -200 mA,
VB ≥ 24 V, I(VH1) = -300 mA
300 400 600 mV
311 CVH1
Required Capacitor at VH1
tolerance ±30 %
2.2
10
µF
312 RiCVH1 Permissible Internal Resistance
of Capacitor at VH1
1
Ω
313 V()
Voltage at VH2
versus VCC2, CVH2 = 1 µF,
VB ≤ 5V, I(VH2) = -50 mA,
VB > 5 V, I(VH2) = -100 mA,
VB ≥ 12 V, I(VH2) = -200 mA,
VB ≥ 24 V, I(VH2) = -300 mA
300 400 600 mV
315 CVH2
Required Capacitor at VH2
tolerance ±30 %
2.2
10
µF
316 RiCVH2 Permissible Internal Resistance
of Capacitor at VH2
1
Ω
330 ηVH
Efficiency of Switching Converter VB = 4 V, V(VH) > 7 V, VB = VBR,
70
%
VH
VH1 > VCC1 + 800 mV, VH2 > VCC2 + 800 mV
331 ηVH
Efficiency of Switching Converter VB = 6.5 V, V(VH) > 7 V, VB = VBR,
80
%
VH
VH1 > VCC1 + 800 mV, VH2 > VCC2 + 800 mV
332 ηVH1
Efficiency of Switching Converter VB = 4 V, V(VH) > 8.1 V, VB = VBR,
70
%
VH1
ENV1 = hi, ENV2 = lo
333 ηVH1
Efficiency of Switching Converter
VH1
80
%
334 ηVH2
Efficiency of Switching Converter VB = 4 V, V(VH) > 8.1 V, VB = VBR,
70
%
VH2
ENV1 = lo, ENV2 = hi
335 ηVH2
Efficiency of Switching Converter VB = 6.5 V, V(VH) > 8.1 V, VB = VBR,
80
%
VH2
ENV1 = lo, ENV2 = hi
Bias, Oscillator and Reference RREF
401 V(RREF) Voltage at RREF
resistor RREF = 20 kΩ ±1 %,
resistor RREF versus GNDA
1.16 1.24 1.32
V
402 R(RREF) Permissible Resistor at RREF ±1 %
19.6
34
kΩ
403 Isc(RREF) Short-Circuit Current lo in RREF V(RREF) = 0 V
-3
-0.5 mA